combine-echodata-provenance-bug.ipynb

{
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   "id": "7fc642b8-c169-4831-9f1e-2d9703d9c9e2",
   "metadata": {
    "tags": []
   },
   "source": [
    "# Bug with `Provenance` variables when combining combined and open_raw'd echodata objects\n",
    "\n",
    "8/4/23, Emilio"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "1a6b8478-730c-4879-b030-a93dceb9dbab",
   "metadata": {},
   "outputs": [],
   "source": [
    "from pathlib import Path\n",
    "import xarray as xr\n",
    "\n",
    "import echopype as ep\n",
    "from echopype.testing import TEST_DATA_FOLDER"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "6a112007-938b-4e11-b61f-c97c32936bbf",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'0.7.2.dev65+ga10d22bf'"
      ]
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     "execution_count": 2,
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    }
   ],
   "source": [
    "ep.__version__"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "e4a40060-0b43-4efb-906d-97d04d9ddd9c",
   "metadata": {},
   "outputs": [],
   "source": [
    "ek60_raw_files = [\n",
    "    \"Summer2017-D20170620-T011027.raw\",\n",
    "    \"Summer2017-D20170620-T014302.raw\",\n",
    "    \"Summer2017-D20170620-T021537.raw\",\n",
    "    \"Summer2017-D20170620-T024811.raw\"\n",
    "]"
   ]
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   "execution_count": 4,
   "id": "f6c8a393-6365-418a-9f65-b7832d009f0e",
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     "text": [
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:249: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:249: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:249: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:154: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:249: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n",
      "/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/convert/set_groups_ek60.py:717: UserWarning: Converting non-nanosecond precision datetime values to nanosecond precision. This behavior can eventually be relaxed in xarray, as it is an artifact from pandas which is now beginning to support non-nanosecond precision values. This warning is caused by passing non-nanosecond np.datetime64 or np.timedelta64 values to the DataArray or Variable constructor; it can be silenced by converting the values to nanosecond precision ahead of time.\n",
      "  ds_tmp = xr.Dataset(\n"
     ]
    }
   ],
   "source": [
    "eds = [\n",
    "    ep.open_raw(TEST_DATA_FOLDER / \"ek60/ncei-wcsd\" / file, sonar_model=\"EK60\")\n",
    "    for file in ek60_raw_files\n",
    "]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "1b7dd8bf-aa33-4cf6-bca5-d88cd00575c2",
   "metadata": {},
   "outputs": [],
   "source": [
    "# Combine the first 3 echodata objects, but not the 4th\n",
    "combined_ed = ep.combine_echodata(eds[:3])"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ef0cfb14-cefa-4f33-9802-9b790cba8b6e",
   "metadata": {},
   "source": [
    "The Provenance variables all look good"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "fd161b9e-2e77-45d5-8af8-71e7fdb8b120",
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   "outputs": [
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       "  color: var(--xr-disabled-color);\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:checked + label:before {\n",
       "  content: '▼';\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:checked + label > span {\n",
       "  display: none;\n",
       "}\n",
       "\n",
       ".xr-section-summary,\n",
       ".xr-section-inline-details {\n",
       "  padding-top: 4px;\n",
       "  padding-bottom: 4px;\n",
       "}\n",
       "\n",
       ".xr-section-inline-details {\n",
       "  grid-column: 2 / -1;\n",
       "}\n",
       "\n",
       ".xr-section-details {\n",
       "  display: none;\n",
       "  grid-column: 1 / -1;\n",
       "  margin-bottom: 5px;\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:checked ~ .xr-section-details {\n",
       "  display: contents;\n",
       "}\n",
       "\n",
       ".xr-array-wrap {\n",
       "  grid-column: 1 / -1;\n",
       "  display: grid;\n",
       "  grid-template-columns: 20px auto;\n",
       "}\n",
       "\n",
       ".xr-array-wrap > label {\n",
       "  grid-column: 1;\n",
       "  vertical-align: top;\n",
       "}\n",
       "\n",
       ".xr-preview {\n",
       "  color: var(--xr-font-color3);\n",
       "}\n",
       "\n",
       ".xr-array-preview,\n",
       ".xr-array-data {\n",
       "  padding: 0 5px !important;\n",
       "  grid-column: 2;\n",
       "}\n",
       "\n",
       ".xr-array-data,\n",
       ".xr-array-in:checked ~ .xr-array-preview {\n",
       "  display: none;\n",
       "}\n",
       "\n",
       ".xr-array-in:checked ~ .xr-array-data,\n",
       ".xr-array-preview {\n",
       "  display: inline-block;\n",
       "}\n",
       "\n",
       ".xr-dim-list {\n",
       "  display: inline-block !important;\n",
       "  list-style: none;\n",
       "  padding: 0 !important;\n",
       "  margin: 0;\n",
       "}\n",
       "\n",
       ".xr-dim-list li {\n",
       "  display: inline-block;\n",
       "  padding: 0;\n",
       "  margin: 0;\n",
       "}\n",
       "\n",
       ".xr-dim-list:before {\n",
       "  content: '(';\n",
       "}\n",
       "\n",
       ".xr-dim-list:after {\n",
       "  content: ')';\n",
       "}\n",
       "\n",
       ".xr-dim-list li:not(:last-child):after {\n",
       "  content: ',';\n",
       "  padding-right: 5px;\n",
       "}\n",
       "\n",
       ".xr-has-index {\n",
       "  font-weight: bold;\n",
       "}\n",
       "\n",
       ".xr-var-list,\n",
       ".xr-var-item {\n",
       "  display: contents;\n",
       "}\n",
       "\n",
       ".xr-var-item > div,\n",
       ".xr-var-item label,\n",
       ".xr-var-item > .xr-var-name span {\n",
       "  background-color: var(--xr-background-color-row-even);\n",
       "  margin-bottom: 0;\n",
       "}\n",
       "\n",
       ".xr-var-item > .xr-var-name:hover span {\n",
       "  padding-right: 5px;\n",
       "}\n",
       "\n",
       ".xr-var-list > li:nth-child(odd) > div,\n",
       ".xr-var-list > li:nth-child(odd) > label,\n",
       ".xr-var-list > li:nth-child(odd) > .xr-var-name span {\n",
       "  background-color: var(--xr-background-color-row-odd);\n",
       "}\n",
       "\n",
       ".xr-var-name {\n",
       "  grid-column: 1;\n",
       "}\n",
       "\n",
       ".xr-var-dims {\n",
       "  grid-column: 2;\n",
       "}\n",
       "\n",
       ".xr-var-dtype {\n",
       "  grid-column: 3;\n",
       "  text-align: right;\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-var-preview {\n",
       "  grid-column: 4;\n",
       "}\n",
       "\n",
       ".xr-index-preview {\n",
       "  grid-column: 2 / 5;\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-var-name,\n",
       ".xr-var-dims,\n",
       ".xr-var-dtype,\n",
       ".xr-preview,\n",
       ".xr-attrs dt {\n",
       "  white-space: nowrap;\n",
       "  overflow: hidden;\n",
       "  text-overflow: ellipsis;\n",
       "  padding-right: 10px;\n",
       "}\n",
       "\n",
       ".xr-var-name:hover,\n",
       ".xr-var-dims:hover,\n",
       ".xr-var-dtype:hover,\n",
       ".xr-attrs dt:hover {\n",
       "  overflow: visible;\n",
       "  width: auto;\n",
       "  z-index: 1;\n",
       "}\n",
       "\n",
       ".xr-var-attrs,\n",
       ".xr-var-data,\n",
       ".xr-index-data {\n",
       "  display: none;\n",
       "  background-color: var(--xr-background-color) !important;\n",
       "  padding-bottom: 5px !important;\n",
       "}\n",
       "\n",
       ".xr-var-attrs-in:checked ~ .xr-var-attrs,\n",
       ".xr-var-data-in:checked ~ .xr-var-data,\n",
       ".xr-index-data-in:checked ~ .xr-index-data {\n",
       "  display: block;\n",
       "}\n",
       "\n",
       ".xr-var-data > table {\n",
       "  float: right;\n",
       "}\n",
       "\n",
       ".xr-var-name span,\n",
       ".xr-var-data,\n",
       ".xr-index-name div,\n",
       ".xr-index-data,\n",
       ".xr-attrs {\n",
       "  padding-left: 25px !important;\n",
       "}\n",
       "\n",
       ".xr-attrs,\n",
       ".xr-var-attrs,\n",
       ".xr-var-data,\n",
       ".xr-index-data {\n",
       "  grid-column: 1 / -1;\n",
       "}\n",
       "\n",
       "dl.xr-attrs {\n",
       "  padding: 0;\n",
       "  margin: 0;\n",
       "  display: grid;\n",
       "  grid-template-columns: 125px auto;\n",
       "}\n",
       "\n",
       ".xr-attrs dt,\n",
       ".xr-attrs dd {\n",
       "  padding: 0;\n",
       "  margin: 0;\n",
       "  float: left;\n",
       "  padding-right: 10px;\n",
       "  width: auto;\n",
       "}\n",
       "\n",
       ".xr-attrs dt {\n",
       "  font-weight: normal;\n",
       "  grid-column: 1;\n",
       "}\n",
       "\n",
       ".xr-attrs dt:hover span {\n",
       "  display: inline-block;\n",
       "  background: var(--xr-background-color);\n",
       "  padding-right: 10px;\n",
       "}\n",
       "\n",
       ".xr-attrs dd {\n",
       "  grid-column: 2;\n",
       "  white-space: pre-wrap;\n",
       "  word-break: break-all;\n",
       "}\n",
       "\n",
       ".xr-icon-database,\n",
       ".xr-icon-file-text2,\n",
       ".xr-no-icon {\n",
       "  display: inline-block;\n",
       "  vertical-align: middle;\n",
       "  width: 1em;\n",
       "  height: 1.5em !important;\n",
       "  stroke-width: 0;\n",
       "  stroke: currentColor;\n",
       "  fill: currentColor;\n",
       "}\n",
       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
       "Dimensions:                      (filenames: 3, echodata_filename: 3)\n",
       "Coordinates:\n",
       "  * filenames                    (filenames) int64 0 1 2\n",
       "  * echodata_filename            (echodata_filename) &lt;U32 &#x27;Summer2017-D201706...\n",
       "Data variables: (12/27)\n",
       "    source_filenames             (filenames) &lt;U130 &#x27;/usr/mayorgadat/workmain/...\n",
       "    conventions                  (echodata_filename) &lt;U35 &#x27;CF-1.7, SONAR-netC...\n",
       "    keywords                     (echodata_filename) &lt;U4 &#x27;EK60&#x27; &#x27;EK60&#x27; &#x27;EK60&#x27;\n",
       "    sonar_convention_authority   (echodata_filename) &lt;U4 &#x27;ICES&#x27; &#x27;ICES&#x27; &#x27;ICES&#x27;\n",
       "    sonar_convention_name        (echodata_filename) &lt;U13 &#x27;SONAR-netCDF4&#x27; ......\n",
       "    sonar_convention_version     (echodata_filename) &lt;U3 &#x27;1.0&#x27; &#x27;1.0&#x27; &#x27;1.0&#x27;\n",
       "    ...                           ...\n",
       "    sonar_serial_number          (echodata_filename) &lt;U1 &#x27;&#x27; &#x27;&#x27; &#x27;&#x27;\n",
       "    sonar_software_name          (echodata_filename) &lt;U4 &#x27;ER60&#x27; &#x27;ER60&#x27; &#x27;ER60&#x27;\n",
       "    sonar_software_version       (echodata_filename) &lt;U5 &#x27;2.4.3&#x27; &#x27;2.4.3&#x27; &#x27;2.4.3&#x27;\n",
       "    sonar_type                   (echodata_filename) &lt;U11 &#x27;echosounder&#x27; ... &#x27;...\n",
       "    beam_mode                    (echodata_filename) &lt;U8 &#x27;vertical&#x27; ... &#x27;vert...\n",
       "    conversion_equation_t        (echodata_filename) &lt;U6 &#x27;type_3&#x27; ... &#x27;type_3&#x27;\n",
       "Attributes:\n",
       "    conversion_software_name:      echopype\n",
       "    conversion_software_version:   0.7.2.dev65+ga10d22bf\n",
       "    conversion_time:               2023-08-04T18:18:57Z\n",
       "    duplicate_ping_times:          0\n",
       "    is_combined:                   True\n",
       "    combination_software_name:     echopype\n",
       "    combination_software_version:  0.7.2.dev65+ga10d22bf\n",
       "    combination_time:              2023-08-04T18:19:00Z</pre><div class='xr-wrap' style='display:none'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-d599fea0-78f6-4652-9c31-737f68cd65f2' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-d599fea0-78f6-4652-9c31-737f68cd65f2' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>filenames</span>: 3</li><li><span class='xr-has-index'>echodata_filename</span>: 3</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-33961d22-07eb-42d1-bbeb-c241983af240' class='xr-section-summary-in' type='checkbox'  checked><label for='section-33961d22-07eb-42d1-bbeb-c241983af240' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>filenames</span></div><div class='xr-var-dims'>(filenames)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-4e1c0436-3503-495f-8ebf-b9fa8c312b8a' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-4e1c0436-3503-495f-8ebf-b9fa8c312b8a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-f01f378e-49e9-4c15-a752-9ec784f1a030' class='xr-var-data-in' type='checkbox'><label for='data-f01f378e-49e9-4c15-a752-9ec784f1a030' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>Index for data and metadata source filenames</dd></dl></div><div class='xr-var-data'><pre>array([0, 1, 2])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>echodata_filename</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U32</div><div class='xr-var-preview xr-preview'>&#x27;Summer2017-D20170620-T011027.ra...</div><input id='attrs-1434ce5f-90b4-4e14-a013-ca273ccd30f9' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-1434ce5f-90b4-4e14-a013-ca273ccd30f9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-815a1d33-4fdc-43ef-a210-0d0c949ca0bd' class='xr-var-data-in' type='checkbox'><label for='data-815a1d33-4fdc-43ef-a210-0d0c949ca0bd' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([&#x27;Summer2017-D20170620-T011027.raw&#x27;, &#x27;Summer2017-D20170620-T014302.raw&#x27;,\n",
       "       &#x27;Summer2017-D20170620-T021537.raw&#x27;], dtype=&#x27;&lt;U32&#x27;)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-fc721dca-b541-47b6-b5bd-b7e06d2b3089' class='xr-section-summary-in' type='checkbox'  ><label for='section-fc721dca-b541-47b6-b5bd-b7e06d2b3089' class='xr-section-summary' >Data variables: <span>(27)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>source_filenames</span></div><div class='xr-var-dims'>(filenames)</div><div class='xr-var-dtype'>&lt;U130</div><div class='xr-var-preview xr-preview'>&#x27;/usr/mayorgadat/workmain/acoust...</div><input id='attrs-dc890e23-8b2a-4512-8792-88f3eb437b9f' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-dc890e23-8b2a-4512-8792-88f3eb437b9f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-00396dce-fded-410e-a653-ae202fc6ee6f' class='xr-var-data-in' type='checkbox'><label for='data-00396dce-fded-410e-a653-ae202fc6ee6f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>Source filenames</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T011027.raw&#x27;,\n",
       "       &#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T014302.raw&#x27;,\n",
       "       &#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T021537.raw&#x27;],\n",
       "      dtype=&#x27;&lt;U130&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conventions</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U35</div><div class='xr-var-preview xr-preview'>&#x27;CF-1.7, SONAR-netCDF4-1.0, ACDD...</div><input id='attrs-46ac0ac3-2d93-459b-a2fb-8c1bb38e4348' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-46ac0ac3-2d93-459b-a2fb-8c1bb38e4348' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-99892626-8370-45ee-a457-416000598635' class='xr-var-data-in' type='checkbox'><label for='data-99892626-8370-45ee-a457-416000598635' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;CF-1.7, SONAR-netCDF4-1.0, ACDD-1.3&#x27;,\n",
       "       &#x27;CF-1.7, SONAR-netCDF4-1.0, ACDD-1.3&#x27;,\n",
       "       &#x27;CF-1.7, SONAR-netCDF4-1.0, ACDD-1.3&#x27;], dtype=&#x27;&lt;U35&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>keywords</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U4</div><div class='xr-var-preview xr-preview'>&#x27;EK60&#x27; &#x27;EK60&#x27; &#x27;EK60&#x27;</div><input id='attrs-c7213121-e2b4-4b04-be1a-0a9de3b16449' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-c7213121-e2b4-4b04-be1a-0a9de3b16449' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-3e5e2a1b-990f-4821-8519-e9a29881f21b' class='xr-var-data-in' type='checkbox'><label for='data-3e5e2a1b-990f-4821-8519-e9a29881f21b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;EK60&#x27;, &#x27;EK60&#x27;, &#x27;EK60&#x27;], dtype=&#x27;&lt;U4&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_convention_authority</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U4</div><div class='xr-var-preview xr-preview'>&#x27;ICES&#x27; &#x27;ICES&#x27; &#x27;ICES&#x27;</div><input id='attrs-1d412757-0833-454e-a391-851c429f9f12' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1d412757-0833-454e-a391-851c429f9f12' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5da029e0-0924-432e-b44a-657502526639' class='xr-var-data-in' type='checkbox'><label for='data-5da029e0-0924-432e-b44a-657502526639' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;ICES&#x27;, &#x27;ICES&#x27;, &#x27;ICES&#x27;], dtype=&#x27;&lt;U4&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_convention_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U13</div><div class='xr-var-preview xr-preview'>&#x27;SONAR-netCDF4&#x27; ... &#x27;SONAR-netCDF4&#x27;</div><input id='attrs-a731f10e-7e34-4e6f-a1da-acb84229a041' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a731f10e-7e34-4e6f-a1da-acb84229a041' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-6c6cf0d9-678a-45bd-8c78-6e44fa218886' class='xr-var-data-in' type='checkbox'><label for='data-6c6cf0d9-678a-45bd-8c78-6e44fa218886' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;SONAR-netCDF4&#x27;, &#x27;SONAR-netCDF4&#x27;, &#x27;SONAR-netCDF4&#x27;], dtype=&#x27;&lt;U13&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_convention_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;1.0&#x27; &#x27;1.0&#x27; &#x27;1.0&#x27;</div><input id='attrs-b2b84182-392f-4223-a3f6-b36b17da7cd5' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b2b84182-392f-4223-a3f6-b36b17da7cd5' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-3c9c0eda-26de-4f60-ac0a-e535b1f895b1' class='xr-var-data-in' type='checkbox'><label for='data-3c9c0eda-26de-4f60-ac0a-e535b1f895b1' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;1.0&#x27;, &#x27;1.0&#x27;, &#x27;1.0&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>summary</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;&#x27; &#x27;&#x27; &#x27;&#x27;</div><input id='attrs-b74aebca-e043-4820-aca4-929de0e3aa16' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b74aebca-e043-4820-aca4-929de0e3aa16' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-36b23d60-ff02-4b5c-9913-309ef4dd4960' class='xr-var-data-in' type='checkbox'><label for='data-36b23d60-ff02-4b5c-9913-309ef4dd4960' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;&#x27;, &#x27;&#x27;, &#x27;&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>title</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;&#x27; &#x27;&#x27; &#x27;&#x27;</div><input id='attrs-026d77fe-1a0b-4087-ab0a-2326f1709081' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-026d77fe-1a0b-4087-ab0a-2326f1709081' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2f157691-72de-4bf3-afec-0b2546135f66' class='xr-var-data-in' type='checkbox'><label for='data-2f157691-72de-4bf3-afec-0b2546135f66' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;&#x27;, &#x27;&#x27;, &#x27;&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>date_created</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U20</div><div class='xr-var-preview xr-preview'>&#x27;2017-06-20T01:10:27Z&#x27; ... &#x27;2017...</div><input id='attrs-e2aa07b1-cda6-4b82-a90a-375f6c803103' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-e2aa07b1-cda6-4b82-a90a-375f6c803103' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-dc1e5e90-b6bf-4121-8e63-8c968eb84787' class='xr-var-data-in' type='checkbox'><label for='data-dc1e5e90-b6bf-4121-8e63-8c968eb84787' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;2017-06-20T01:10:27Z&#x27;, &#x27;2017-06-20T01:43:02Z&#x27;,\n",
       "       &#x27;2017-06-20T02:15:37Z&#x27;], dtype=&#x27;&lt;U20&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>processing_level</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U8</div><div class='xr-var-preview xr-preview'>&#x27;Level 1A&#x27; &#x27;Level 1A&#x27; &#x27;Level 1A&#x27;</div><input id='attrs-9426ea62-2867-4c86-b104-3c7712ad71cf' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-9426ea62-2867-4c86-b104-3c7712ad71cf' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1a7c1a00-2ebe-41ae-ac31-d5ed89649c74' class='xr-var-data-in' type='checkbox'><label for='data-1a7c1a00-2ebe-41ae-ac31-d5ed89649c74' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;Level 1A&#x27;, &#x27;Level 1A&#x27;, &#x27;Level 1A&#x27;], dtype=&#x27;&lt;U8&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>processing_level_url</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U64</div><div class='xr-var-preview xr-preview'>&#x27;https://echopype.readthedocs.io...</div><input id='attrs-49138027-7a5a-4bdd-a9d2-b743f6668a78' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-49138027-7a5a-4bdd-a9d2-b743f6668a78' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-3246b036-a9ba-40cb-840d-bf729e72bef8' class='xr-var-data-in' type='checkbox'><label for='data-3246b036-a9ba-40cb-840d-bf729e72bef8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;https://echopype.readthedocs.io/en/stable/processing-levels.html&#x27;,\n",
       "       &#x27;https://echopype.readthedocs.io/en/stable/processing-levels.html&#x27;,\n",
       "       &#x27;https://echopype.readthedocs.io/en/stable/processing-levels.html&#x27;],\n",
       "      dtype=&#x27;&lt;U64&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>platform_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;&#x27; &#x27;&#x27; &#x27;&#x27;</div><input id='attrs-6bcd4534-7a95-4157-97b7-93ffa7183681' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6bcd4534-7a95-4157-97b7-93ffa7183681' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2062d030-a2a7-4d5f-81c3-7c2d8a57d2e4' class='xr-var-data-in' type='checkbox'><label for='data-2062d030-a2a7-4d5f-81c3-7c2d8a57d2e4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;&#x27;, &#x27;&#x27;, &#x27;&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>platform_type</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;&#x27; &#x27;&#x27; &#x27;&#x27;</div><input id='attrs-b3d2e7f6-1d7f-4f89-aa29-2d8d4059d55a' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b3d2e7f6-1d7f-4f89-aa29-2d8d4059d55a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7f0117db-9747-4596-956a-40797372314a' class='xr-var-data-in' type='checkbox'><label for='data-7f0117db-9747-4596-956a-40797372314a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;&#x27;, &#x27;&#x27;, &#x27;&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>platform_code_ICES</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;&#x27; &#x27;&#x27; &#x27;&#x27;</div><input id='attrs-758853cc-f36b-4c45-967b-0af483c11690' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-758853cc-f36b-4c45-967b-0af483c11690' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-43b88588-e031-454a-8cc9-95dce4ed96d8' class='xr-var-data-in' type='checkbox'><label for='data-43b88588-e031-454a-8cc9-95dce4ed96d8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;&#x27;, &#x27;&#x27;, &#x27;&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>description</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U25</div><div class='xr-var-preview xr-preview'>&#x27;All NMEA sensor datagrams&#x27; ... ...</div><input id='attrs-8bd596e1-01b9-4f97-94c8-397bfc9550ac' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-8bd596e1-01b9-4f97-94c8-397bfc9550ac' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-86bcc6ec-cc21-43a8-b778-b0e9b1eb92b1' class='xr-var-data-in' type='checkbox'><label for='data-86bcc6ec-cc21-43a8-b778-b0e9b1eb92b1' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform/NMEA</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;All NMEA sensor datagrams&#x27;, &#x27;All NMEA sensor datagrams&#x27;,\n",
       "       &#x27;All NMEA sensor datagrams&#x27;], dtype=&#x27;&lt;U25&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_software_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U8</div><div class='xr-var-preview xr-preview'>&#x27;echopype&#x27; &#x27;echopype&#x27; &#x27;echopype&#x27;</div><input id='attrs-2bb4c155-9fb9-423b-8a45-4f8b731d34f6' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-2bb4c155-9fb9-423b-8a45-4f8b731d34f6' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5fdcd654-9786-47e4-953d-b6910566cb17' class='xr-var-data-in' type='checkbox'><label for='data-5fdcd654-9786-47e4-953d-b6910566cb17' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;echopype&#x27;, &#x27;echopype&#x27;, &#x27;echopype&#x27;], dtype=&#x27;&lt;U8&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_software_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U21</div><div class='xr-var-preview xr-preview'>&#x27;0.7.2.dev65+ga10d22bf&#x27; ... &#x27;0.7...</div><input id='attrs-83cab731-c148-4028-8648-7e91b745db31' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-83cab731-c148-4028-8648-7e91b745db31' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e7650112-0273-4163-8901-3ab5f8dbe57a' class='xr-var-data-in' type='checkbox'><label for='data-e7650112-0273-4163-8901-3ab5f8dbe57a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;0.7.2.dev65+ga10d22bf&#x27;, &#x27;0.7.2.dev65+ga10d22bf&#x27;,\n",
       "       &#x27;0.7.2.dev65+ga10d22bf&#x27;], dtype=&#x27;&lt;U21&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_time</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U20</div><div class='xr-var-preview xr-preview'>&#x27;2023-08-04T18:18:57Z&#x27; ... &#x27;2023...</div><input id='attrs-f76ee94b-20da-4737-bb16-65ef93284185' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f76ee94b-20da-4737-bb16-65ef93284185' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5029a2d0-e3be-4462-9b5e-3e520f1aeddd' class='xr-var-data-in' type='checkbox'><label for='data-5029a2d0-e3be-4462-9b5e-3e520f1aeddd' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;2023-08-04T18:18:57Z&#x27;, &#x27;2023-08-04T18:18:58Z&#x27;,\n",
       "       &#x27;2023-08-04T18:18:59Z&#x27;], dtype=&#x27;&lt;U20&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>duplicate_ping_times</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;0&#x27; &#x27;0&#x27; &#x27;0&#x27;</div><input id='attrs-afc3411c-2f7a-46c8-8684-4753ed1f8adb' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-afc3411c-2f7a-46c8-8684-4753ed1f8adb' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-0fa44f6c-770c-4492-ad36-522c077d60cc' class='xr-var-data-in' type='checkbox'><label for='data-0fa44f6c-770c-4492-ad36-522c077d60cc' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;0&#x27;, &#x27;0&#x27;, &#x27;0&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_manufacturer</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U6</div><div class='xr-var-preview xr-preview'>&#x27;Simrad&#x27; &#x27;Simrad&#x27; &#x27;Simrad&#x27;</div><input id='attrs-211ce161-e545-4083-acaa-105ad9621ba1' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-211ce161-e545-4083-acaa-105ad9621ba1' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2fd8af7a-d91c-4fa3-8692-94a1282229f8' class='xr-var-data-in' type='checkbox'><label for='data-2fd8af7a-d91c-4fa3-8692-94a1282229f8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;Simrad&#x27;, &#x27;Simrad&#x27;, &#x27;Simrad&#x27;], dtype=&#x27;&lt;U6&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_model</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U4</div><div class='xr-var-preview xr-preview'>&#x27;EK60&#x27; &#x27;EK60&#x27; &#x27;EK60&#x27;</div><input id='attrs-6e58f0a0-067e-4c1c-a115-c4fa26aa5230' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6e58f0a0-067e-4c1c-a115-c4fa26aa5230' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-3f7e0c41-3e32-43e6-aed8-bb9734a275f9' class='xr-var-data-in' type='checkbox'><label for='data-3f7e0c41-3e32-43e6-aed8-bb9734a275f9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;EK60&#x27;, &#x27;EK60&#x27;, &#x27;EK60&#x27;], dtype=&#x27;&lt;U4&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_serial_number</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U1</div><div class='xr-var-preview xr-preview'>&#x27;&#x27; &#x27;&#x27; &#x27;&#x27;</div><input id='attrs-297b9204-4477-40f8-8668-ef2b001a421c' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-297b9204-4477-40f8-8668-ef2b001a421c' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-dfcd824c-6b01-4f0b-ac11-d3dd9821a69a' class='xr-var-data-in' type='checkbox'><label for='data-dfcd824c-6b01-4f0b-ac11-d3dd9821a69a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;&#x27;, &#x27;&#x27;, &#x27;&#x27;], dtype=&#x27;&lt;U1&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_software_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U4</div><div class='xr-var-preview xr-preview'>&#x27;ER60&#x27; &#x27;ER60&#x27; &#x27;ER60&#x27;</div><input id='attrs-f79dbf53-8d7c-4502-88a0-b9c575d1bec2' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f79dbf53-8d7c-4502-88a0-b9c575d1bec2' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1ff90309-cbc3-4a93-bff7-2a0763b54add' class='xr-var-data-in' type='checkbox'><label for='data-1ff90309-cbc3-4a93-bff7-2a0763b54add' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;ER60&#x27;, &#x27;ER60&#x27;, &#x27;ER60&#x27;], dtype=&#x27;&lt;U4&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_software_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U5</div><div class='xr-var-preview xr-preview'>&#x27;2.4.3&#x27; &#x27;2.4.3&#x27; &#x27;2.4.3&#x27;</div><input id='attrs-33f25f6d-70a2-4510-8cb9-96c0146dbdcb' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-33f25f6d-70a2-4510-8cb9-96c0146dbdcb' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8d86c774-fbd0-4d3f-92b9-e33f7372d71f' class='xr-var-data-in' type='checkbox'><label for='data-8d86c774-fbd0-4d3f-92b9-e33f7372d71f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;2.4.3&#x27;, &#x27;2.4.3&#x27;, &#x27;2.4.3&#x27;], dtype=&#x27;&lt;U5&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_type</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U11</div><div class='xr-var-preview xr-preview'>&#x27;echosounder&#x27; ... &#x27;echosounder&#x27;</div><input id='attrs-954e770b-4e07-48f1-adf7-dda84d7a1e2b' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-954e770b-4e07-48f1-adf7-dda84d7a1e2b' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7af0fa75-9e16-4d74-a47b-1d7d747e7726' class='xr-var-data-in' type='checkbox'><label for='data-7af0fa75-9e16-4d74-a47b-1d7d747e7726' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;echosounder&#x27;, &#x27;echosounder&#x27;, &#x27;echosounder&#x27;], dtype=&#x27;&lt;U11&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>beam_mode</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U8</div><div class='xr-var-preview xr-preview'>&#x27;vertical&#x27; &#x27;vertical&#x27; &#x27;vertical&#x27;</div><input id='attrs-df7238e5-3c69-4350-840a-2a8852db6b55' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-df7238e5-3c69-4350-840a-2a8852db6b55' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7804beba-422a-4832-97e3-b63262273314' class='xr-var-data-in' type='checkbox'><label for='data-7804beba-422a-4832-97e3-b63262273314' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar/Beam_group1</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;vertical&#x27;, &#x27;vertical&#x27;, &#x27;vertical&#x27;], dtype=&#x27;&lt;U8&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_equation_t</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U6</div><div class='xr-var-preview xr-preview'>&#x27;type_3&#x27; &#x27;type_3&#x27; &#x27;type_3&#x27;</div><input id='attrs-5cf1f3fa-30dc-4910-bc9a-da2c9e3ccd22' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-5cf1f3fa-30dc-4910-bc9a-da2c9e3ccd22' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5979945d-37ba-41e5-84d7-5aefb1350e6a' class='xr-var-data-in' type='checkbox'><label for='data-5979945d-37ba-41e5-84d7-5aefb1350e6a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar/Beam_group1</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;type_3&#x27;, &#x27;type_3&#x27;, &#x27;type_3&#x27;], dtype=&#x27;&lt;U6&#x27;)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-1ec19748-7cd2-447b-a0dd-7867f8cd5769' class='xr-section-summary-in' type='checkbox'  ><label for='section-1ec19748-7cd2-447b-a0dd-7867f8cd5769' class='xr-section-summary' >Indexes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-index-name'><div>filenames</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-1da91ed0-e13f-4b20-b43a-06f587254bb1' class='xr-index-data-in' type='checkbox'/><label for='index-1da91ed0-e13f-4b20-b43a-06f587254bb1' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Index([0, 1, 2], dtype=&#x27;int64&#x27;, name=&#x27;filenames&#x27;))</pre></div></li><li class='xr-var-item'><div class='xr-index-name'><div>echodata_filename</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-d617aa03-3b46-4c7c-8f70-1dd87ec5ed22' class='xr-index-data-in' type='checkbox'/><label for='index-d617aa03-3b46-4c7c-8f70-1dd87ec5ed22' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Index([&#x27;Summer2017-D20170620-T011027.raw&#x27;, &#x27;Summer2017-D20170620-T014302.raw&#x27;,\n",
       "       &#x27;Summer2017-D20170620-T021537.raw&#x27;],\n",
       "      dtype=&#x27;object&#x27;, name=&#x27;echodata_filename&#x27;))</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-1ec06a08-2708-4c32-b3a9-0d38fd496d4d' class='xr-section-summary-in' type='checkbox'  checked><label for='section-1ec06a08-2708-4c32-b3a9-0d38fd496d4d' class='xr-section-summary' >Attributes: <span>(8)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>conversion_software_name :</span></dt><dd>echopype</dd><dt><span>conversion_software_version :</span></dt><dd>0.7.2.dev65+ga10d22bf</dd><dt><span>conversion_time :</span></dt><dd>2023-08-04T18:18:57Z</dd><dt><span>duplicate_ping_times :</span></dt><dd>0</dd><dt><span>is_combined :</span></dt><dd>True</dd><dt><span>combination_software_name :</span></dt><dd>echopype</dd><dt><span>combination_software_version :</span></dt><dd>0.7.2.dev65+ga10d22bf</dd><dt><span>combination_time :</span></dt><dd>2023-08-04T18:19:00Z</dd></dl></div></li></ul></div></div>"
      ],
      "text/plain": [
       "<xarray.Dataset>\n",
       "Dimensions:                      (filenames: 3, echodata_filename: 3)\n",
       "Coordinates:\n",
       "  * filenames                    (filenames) int64 0 1 2\n",
       "  * echodata_filename            (echodata_filename) <U32 'Summer2017-D201706...\n",
       "Data variables: (12/27)\n",
       "    source_filenames             (filenames) <U130 '/usr/mayorgadat/workmain/...\n",
       "    conventions                  (echodata_filename) <U35 'CF-1.7, SONAR-netC...\n",
       "    keywords                     (echodata_filename) <U4 'EK60' 'EK60' 'EK60'\n",
       "    sonar_convention_authority   (echodata_filename) <U4 'ICES' 'ICES' 'ICES'\n",
       "    sonar_convention_name        (echodata_filename) <U13 'SONAR-netCDF4' ......\n",
       "    sonar_convention_version     (echodata_filename) <U3 '1.0' '1.0' '1.0'\n",
       "    ...                           ...\n",
       "    sonar_serial_number          (echodata_filename) <U1 '' '' ''\n",
       "    sonar_software_name          (echodata_filename) <U4 'ER60' 'ER60' 'ER60'\n",
       "    sonar_software_version       (echodata_filename) <U5 '2.4.3' '2.4.3' '2.4.3'\n",
       "    sonar_type                   (echodata_filename) <U11 'echosounder' ... '...\n",
       "    beam_mode                    (echodata_filename) <U8 'vertical' ... 'vert...\n",
       "    conversion_equation_t        (echodata_filename) <U6 'type_3' ... 'type_3'\n",
       "Attributes:\n",
       "    conversion_software_name:      echopype\n",
       "    conversion_software_version:   0.7.2.dev65+ga10d22bf\n",
       "    conversion_time:               2023-08-04T18:18:57Z\n",
       "    duplicate_ping_times:          0\n",
       "    is_combined:                   True\n",
       "    combination_software_name:     echopype\n",
       "    combination_software_version:  0.7.2.dev65+ga10d22bf\n",
       "    combination_time:              2023-08-04T18:19:00Z"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "combined_ed['Provenance']"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8b9e65fa-2d82-4be7-b471-fe3997ee5037",
   "metadata": {},
   "source": [
    "## Combine a combined echodata object and a freshly open_raw'd echodata object"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "c1245982-e66b-4756-8628-950c258bfa29",
   "metadata": {},
   "outputs": [],
   "source": [
    "combined_plus_ed4_ed = ep.combine_echodata([combined_ed, eds[-1]])"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "98d87225-7c73-4e75-bc77-e8c92ee15ce8",
   "metadata": {},
   "source": [
    "**All but one of the `Provenance` variables are bad! They're filled with a string array where each element is the string 'nan'**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "de399111-9e9f-447e-a652-7a248316a2a2",
   "metadata": {},
   "outputs": [
    {
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       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
       "  display: none;\n",
       "}\n",
       "\n",
       ".xr-header {\n",
       "  padding-top: 6px;\n",
       "  padding-bottom: 6px;\n",
       "  margin-bottom: 4px;\n",
       "  border-bottom: solid 1px var(--xr-border-color);\n",
       "}\n",
       "\n",
       ".xr-header > div,\n",
       ".xr-header > ul {\n",
       "  display: inline;\n",
       "  margin-top: 0;\n",
       "  margin-bottom: 0;\n",
       "}\n",
       "\n",
       ".xr-obj-type,\n",
       ".xr-array-name {\n",
       "  margin-left: 2px;\n",
       "  margin-right: 10px;\n",
       "}\n",
       "\n",
       ".xr-obj-type {\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-sections {\n",
       "  padding-left: 0 !important;\n",
       "  display: grid;\n",
       "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
       "}\n",
       "\n",
       ".xr-section-item {\n",
       "  display: contents;\n",
       "}\n",
       "\n",
       ".xr-section-item input {\n",
       "  display: none;\n",
       "}\n",
       "\n",
       ".xr-section-item input + label {\n",
       "  color: var(--xr-disabled-color);\n",
       "}\n",
       "\n",
       ".xr-section-item input:enabled + label {\n",
       "  cursor: pointer;\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-section-item input:enabled + label:hover {\n",
       "  color: var(--xr-font-color0);\n",
       "}\n",
       "\n",
       ".xr-section-summary {\n",
       "  grid-column: 1;\n",
       "  color: var(--xr-font-color2);\n",
       "  font-weight: 500;\n",
       "}\n",
       "\n",
       ".xr-section-summary > span {\n",
       "  display: inline-block;\n",
       "  padding-left: 0.5em;\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:disabled + label {\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-section-summary-in + label:before {\n",
       "  display: inline-block;\n",
       "  content: '►';\n",
       "  font-size: 11px;\n",
       "  width: 15px;\n",
       "  text-align: center;\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:disabled + label:before {\n",
       "  color: var(--xr-disabled-color);\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:checked + label:before {\n",
       "  content: '▼';\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:checked + label > span {\n",
       "  display: none;\n",
       "}\n",
       "\n",
       ".xr-section-summary,\n",
       ".xr-section-inline-details {\n",
       "  padding-top: 4px;\n",
       "  padding-bottom: 4px;\n",
       "}\n",
       "\n",
       ".xr-section-inline-details {\n",
       "  grid-column: 2 / -1;\n",
       "}\n",
       "\n",
       ".xr-section-details {\n",
       "  display: none;\n",
       "  grid-column: 1 / -1;\n",
       "  margin-bottom: 5px;\n",
       "}\n",
       "\n",
       ".xr-section-summary-in:checked ~ .xr-section-details {\n",
       "  display: contents;\n",
       "}\n",
       "\n",
       ".xr-array-wrap {\n",
       "  grid-column: 1 / -1;\n",
       "  display: grid;\n",
       "  grid-template-columns: 20px auto;\n",
       "}\n",
       "\n",
       ".xr-array-wrap > label {\n",
       "  grid-column: 1;\n",
       "  vertical-align: top;\n",
       "}\n",
       "\n",
       ".xr-preview {\n",
       "  color: var(--xr-font-color3);\n",
       "}\n",
       "\n",
       ".xr-array-preview,\n",
       ".xr-array-data {\n",
       "  padding: 0 5px !important;\n",
       "  grid-column: 2;\n",
       "}\n",
       "\n",
       ".xr-array-data,\n",
       ".xr-array-in:checked ~ .xr-array-preview {\n",
       "  display: none;\n",
       "}\n",
       "\n",
       ".xr-array-in:checked ~ .xr-array-data,\n",
       ".xr-array-preview {\n",
       "  display: inline-block;\n",
       "}\n",
       "\n",
       ".xr-dim-list {\n",
       "  display: inline-block !important;\n",
       "  list-style: none;\n",
       "  padding: 0 !important;\n",
       "  margin: 0;\n",
       "}\n",
       "\n",
       ".xr-dim-list li {\n",
       "  display: inline-block;\n",
       "  padding: 0;\n",
       "  margin: 0;\n",
       "}\n",
       "\n",
       ".xr-dim-list:before {\n",
       "  content: '(';\n",
       "}\n",
       "\n",
       ".xr-dim-list:after {\n",
       "  content: ')';\n",
       "}\n",
       "\n",
       ".xr-dim-list li:not(:last-child):after {\n",
       "  content: ',';\n",
       "  padding-right: 5px;\n",
       "}\n",
       "\n",
       ".xr-has-index {\n",
       "  font-weight: bold;\n",
       "}\n",
       "\n",
       ".xr-var-list,\n",
       ".xr-var-item {\n",
       "  display: contents;\n",
       "}\n",
       "\n",
       ".xr-var-item > div,\n",
       ".xr-var-item label,\n",
       ".xr-var-item > .xr-var-name span {\n",
       "  background-color: var(--xr-background-color-row-even);\n",
       "  margin-bottom: 0;\n",
       "}\n",
       "\n",
       ".xr-var-item > .xr-var-name:hover span {\n",
       "  padding-right: 5px;\n",
       "}\n",
       "\n",
       ".xr-var-list > li:nth-child(odd) > div,\n",
       ".xr-var-list > li:nth-child(odd) > label,\n",
       ".xr-var-list > li:nth-child(odd) > .xr-var-name span {\n",
       "  background-color: var(--xr-background-color-row-odd);\n",
       "}\n",
       "\n",
       ".xr-var-name {\n",
       "  grid-column: 1;\n",
       "}\n",
       "\n",
       ".xr-var-dims {\n",
       "  grid-column: 2;\n",
       "}\n",
       "\n",
       ".xr-var-dtype {\n",
       "  grid-column: 3;\n",
       "  text-align: right;\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-var-preview {\n",
       "  grid-column: 4;\n",
       "}\n",
       "\n",
       ".xr-index-preview {\n",
       "  grid-column: 2 / 5;\n",
       "  color: var(--xr-font-color2);\n",
       "}\n",
       "\n",
       ".xr-var-name,\n",
       ".xr-var-dims,\n",
       ".xr-var-dtype,\n",
       ".xr-preview,\n",
       ".xr-attrs dt {\n",
       "  white-space: nowrap;\n",
       "  overflow: hidden;\n",
       "  text-overflow: ellipsis;\n",
       "  padding-right: 10px;\n",
       "}\n",
       "\n",
       ".xr-var-name:hover,\n",
       ".xr-var-dims:hover,\n",
       ".xr-var-dtype:hover,\n",
       ".xr-attrs dt:hover {\n",
       "  overflow: visible;\n",
       "  width: auto;\n",
       "  z-index: 1;\n",
       "}\n",
       "\n",
       ".xr-var-attrs,\n",
       ".xr-var-data,\n",
       ".xr-index-data {\n",
       "  display: none;\n",
       "  background-color: var(--xr-background-color) !important;\n",
       "  padding-bottom: 5px !important;\n",
       "}\n",
       "\n",
       ".xr-var-attrs-in:checked ~ .xr-var-attrs,\n",
       ".xr-var-data-in:checked ~ .xr-var-data,\n",
       ".xr-index-data-in:checked ~ .xr-index-data {\n",
       "  display: block;\n",
       "}\n",
       "\n",
       ".xr-var-data > table {\n",
       "  float: right;\n",
       "}\n",
       "\n",
       ".xr-var-name span,\n",
       ".xr-var-data,\n",
       ".xr-index-name div,\n",
       ".xr-index-data,\n",
       ".xr-attrs {\n",
       "  padding-left: 25px !important;\n",
       "}\n",
       "\n",
       ".xr-attrs,\n",
       ".xr-var-attrs,\n",
       ".xr-var-data,\n",
       ".xr-index-data {\n",
       "  grid-column: 1 / -1;\n",
       "}\n",
       "\n",
       "dl.xr-attrs {\n",
       "  padding: 0;\n",
       "  margin: 0;\n",
       "  display: grid;\n",
       "  grid-template-columns: 125px auto;\n",
       "}\n",
       "\n",
       ".xr-attrs dt,\n",
       ".xr-attrs dd {\n",
       "  padding: 0;\n",
       "  margin: 0;\n",
       "  float: left;\n",
       "  padding-right: 10px;\n",
       "  width: auto;\n",
       "}\n",
       "\n",
       ".xr-attrs dt {\n",
       "  font-weight: normal;\n",
       "  grid-column: 1;\n",
       "}\n",
       "\n",
       ".xr-attrs dt:hover span {\n",
       "  display: inline-block;\n",
       "  background: var(--xr-background-color);\n",
       "  padding-right: 10px;\n",
       "}\n",
       "\n",
       ".xr-attrs dd {\n",
       "  grid-column: 2;\n",
       "  white-space: pre-wrap;\n",
       "  word-break: break-all;\n",
       "}\n",
       "\n",
       ".xr-icon-database,\n",
       ".xr-icon-file-text2,\n",
       ".xr-no-icon {\n",
       "  display: inline-block;\n",
       "  vertical-align: middle;\n",
       "  width: 1em;\n",
       "  height: 1.5em !important;\n",
       "  stroke-width: 0;\n",
       "  stroke: currentColor;\n",
       "  fill: currentColor;\n",
       "}\n",
       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
       "Dimensions:                       (filenames: 4, echodata_filename: 3)\n",
       "Coordinates:\n",
       "  * filenames                     (filenames) int64 0 1 2 3\n",
       "  * echodata_filename             (echodata_filename) &lt;U32 &#x27;Summer2017-D20170...\n",
       "Data variables: (12/31)\n",
       "    source_filenames              (filenames) &lt;U130 &#x27;/usr/mayorgadat/workmain...\n",
       "    conventions                   (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    keywords                      (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    sonar_convention_authority    (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    sonar_convention_name         (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    sonar_convention_version      (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    ...                            ...\n",
       "    beam_mode                     (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    conversion_equation_t         (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    is_combined                   (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    combination_software_name     (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    combination_software_version  (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "    combination_time              (echodata_filename) &lt;U3 &#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;\n",
       "Attributes:\n",
       "    conversion_software_name:      echopype\n",
       "    conversion_software_version:   0.7.2.dev65+ga10d22bf\n",
       "    conversion_time:               2023-08-04T18:18:57Z\n",
       "    duplicate_ping_times:          0\n",
       "    is_combined:                   True\n",
       "    combination_software_name:     echopype\n",
       "    combination_software_version:  0.7.2.dev65+ga10d22bf\n",
       "    combination_time:              2023-08-04T18:19:00Z</pre><div class='xr-wrap' style='display:none'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-af4b1ca3-5dfe-43ee-8686-200edef2a141' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-af4b1ca3-5dfe-43ee-8686-200edef2a141' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>filenames</span>: 4</li><li><span class='xr-has-index'>echodata_filename</span>: 3</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-4ed732ac-9a8c-4fbf-b10d-35e5ba34b259' class='xr-section-summary-in' type='checkbox'  checked><label for='section-4ed732ac-9a8c-4fbf-b10d-35e5ba34b259' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>filenames</span></div><div class='xr-var-dims'>(filenames)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-24df5dde-8db7-4063-8af8-90fc783b0a18' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-24df5dde-8db7-4063-8af8-90fc783b0a18' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-4785e885-6d60-4d8f-9971-efc75ffaa7c0' class='xr-var-data-in' type='checkbox'><label for='data-4785e885-6d60-4d8f-9971-efc75ffaa7c0' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>Index for data and metadata source filenames</dd></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>echodata_filename</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U32</div><div class='xr-var-preview xr-preview'>&#x27;Summer2017-D20170620-T011027.ra...</div><input id='attrs-25854c63-2b3e-44d1-bb7e-68b8e641c980' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-25854c63-2b3e-44d1-bb7e-68b8e641c980' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-4d1e27ab-d458-4e93-b95d-bb32aa6ea1e8' class='xr-var-data-in' type='checkbox'><label for='data-4d1e27ab-d458-4e93-b95d-bb32aa6ea1e8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([&#x27;Summer2017-D20170620-T011027.raw&#x27;, &#x27;Summer2017-D20170620-T014302.raw&#x27;,\n",
       "       &#x27;Summer2017-D20170620-T021537.raw&#x27;], dtype=&#x27;&lt;U32&#x27;)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-b3a4821b-2f11-4032-b200-9ee96ffdec49' class='xr-section-summary-in' type='checkbox'  ><label for='section-b3a4821b-2f11-4032-b200-9ee96ffdec49' class='xr-section-summary' >Data variables: <span>(31)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>source_filenames</span></div><div class='xr-var-dims'>(filenames)</div><div class='xr-var-dtype'>&lt;U130</div><div class='xr-var-preview xr-preview'>&#x27;/usr/mayorgadat/workmain/acoust...</div><input id='attrs-067cdd3e-9fdd-4d8d-9051-fec519167bce' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-067cdd3e-9fdd-4d8d-9051-fec519167bce' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-08ecd6b4-6edd-4a2a-b497-db91dc594fd3' class='xr-var-data-in' type='checkbox'><label for='data-08ecd6b4-6edd-4a2a-b497-db91dc594fd3' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>Source filenames</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T011027.raw&#x27;,\n",
       "       &#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T014302.raw&#x27;,\n",
       "       &#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T021537.raw&#x27;,\n",
       "       &#x27;/usr/mayorgadat/workmain/acoustics/gh/OSOceanAcoustics/echopype/echopype/test_data/ek60/ncei-wcsd/Summer2017-D20170620-T024811.raw&#x27;],\n",
       "      dtype=&#x27;&lt;U130&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conventions</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-6520abc3-09a0-4857-958b-54f90e530b3d' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6520abc3-09a0-4857-958b-54f90e530b3d' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a39a50ba-0829-4930-b011-7d1cc725b5c1' class='xr-var-data-in' type='checkbox'><label for='data-a39a50ba-0829-4930-b011-7d1cc725b5c1' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>keywords</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-65327d62-eb57-4204-a5d9-03af1ebbbb44' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-65327d62-eb57-4204-a5d9-03af1ebbbb44' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-6be7ed85-77ce-4477-8d2a-b968cf8744b4' class='xr-var-data-in' type='checkbox'><label for='data-6be7ed85-77ce-4477-8d2a-b968cf8744b4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_convention_authority</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-21411a06-d5b7-4cb5-ae2c-0088b928cf50' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-21411a06-d5b7-4cb5-ae2c-0088b928cf50' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c74c52af-637c-45ca-a735-1504b2d34810' class='xr-var-data-in' type='checkbox'><label for='data-c74c52af-637c-45ca-a735-1504b2d34810' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_convention_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-7bc75602-a39a-4e11-a745-da5059a414fb' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-7bc75602-a39a-4e11-a745-da5059a414fb' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ba6bd8a3-8691-4f2a-900d-02aa574d8055' class='xr-var-data-in' type='checkbox'><label for='data-ba6bd8a3-8691-4f2a-900d-02aa574d8055' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_convention_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-d7cbbe49-be42-40db-a488-888d2364b099' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d7cbbe49-be42-40db-a488-888d2364b099' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ff761549-d899-43d1-89ce-30243d738710' class='xr-var-data-in' type='checkbox'><label for='data-ff761549-d899-43d1-89ce-30243d738710' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>summary</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-f0c130a2-03cc-4881-aebe-347fefce053b' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f0c130a2-03cc-4881-aebe-347fefce053b' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1bb213c7-4c61-4de8-ac99-cd547aa7cd82' class='xr-var-data-in' type='checkbox'><label for='data-1bb213c7-4c61-4de8-ac99-cd547aa7cd82' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>title</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-d41bd1e7-4e42-467c-938c-c418599ef242' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d41bd1e7-4e42-467c-938c-c418599ef242' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-0b858a45-8716-44b1-b7d1-7b87ee901e4d' class='xr-var-data-in' type='checkbox'><label for='data-0b858a45-8716-44b1-b7d1-7b87ee901e4d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>date_created</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-f54073b8-1163-4eb5-be44-833b9b5d33fa' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f54073b8-1163-4eb5-be44-833b9b5d33fa' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e5b364ef-9d6d-42f3-8fd7-dadbde0c1621' class='xr-var-data-in' type='checkbox'><label for='data-e5b364ef-9d6d-42f3-8fd7-dadbde0c1621' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>processing_level</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-498d9b01-549e-4094-a025-836b46ecf8f9' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-498d9b01-549e-4094-a025-836b46ecf8f9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-210e70f1-618d-4049-9191-e1a8c227c538' class='xr-var-data-in' type='checkbox'><label for='data-210e70f1-618d-4049-9191-e1a8c227c538' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>processing_level_url</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-f4978b63-499d-49cc-bb13-11dcb5a5f4b1' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f4978b63-499d-49cc-bb13-11dcb5a5f4b1' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-73d1bba3-c046-4e38-a43f-d6470d758908' class='xr-var-data-in' type='checkbox'><label for='data-73d1bba3-c046-4e38-a43f-d6470d758908' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Top-level</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>platform_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-45d32015-12de-4f66-810e-5b4187a57f02' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-45d32015-12de-4f66-810e-5b4187a57f02' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8671dcbc-dd43-4e63-8668-843c5cc2498e' class='xr-var-data-in' type='checkbox'><label for='data-8671dcbc-dd43-4e63-8668-843c5cc2498e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>platform_type</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-411bf58f-3b58-42b8-bd1b-9d3733a3a42c' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-411bf58f-3b58-42b8-bd1b-9d3733a3a42c' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7cc8a20b-890d-41cb-a203-b41397a24895' class='xr-var-data-in' type='checkbox'><label for='data-7cc8a20b-890d-41cb-a203-b41397a24895' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>platform_code_ICES</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-a610cf9e-164c-4a6d-a01e-acdcac8a8c55' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a610cf9e-164c-4a6d-a01e-acdcac8a8c55' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7c7f5cef-02a8-4ea6-a58e-78d02c30dbcf' class='xr-var-data-in' type='checkbox'><label for='data-7c7f5cef-02a8-4ea6-a58e-78d02c30dbcf' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>description</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-63e58dda-93c3-4b7e-994e-642f343a9b97' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-63e58dda-93c3-4b7e-994e-642f343a9b97' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1199c023-5185-4ce9-8cd8-68349129c57a' class='xr-var-data-in' type='checkbox'><label for='data-1199c023-5185-4ce9-8cd8-68349129c57a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Platform/NMEA</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_software_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-c794249a-ef3a-4a0c-978f-3256d988f66a' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-c794249a-ef3a-4a0c-978f-3256d988f66a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5b965ed0-491d-4cd0-aeba-931be0a95b66' class='xr-var-data-in' type='checkbox'><label for='data-5b965ed0-491d-4cd0-aeba-931be0a95b66' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_software_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-ef7d316e-bc49-4ba7-9160-9df5905985ac' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ef7d316e-bc49-4ba7-9160-9df5905985ac' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-717887a7-3c69-4926-8107-5fefee5097a2' class='xr-var-data-in' type='checkbox'><label for='data-717887a7-3c69-4926-8107-5fefee5097a2' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_time</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-f58a2fa6-d849-48f2-af59-572695eacda5' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f58a2fa6-d849-48f2-af59-572695eacda5' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-59560ce0-fffb-4bd7-b920-902078f1456b' class='xr-var-data-in' type='checkbox'><label for='data-59560ce0-fffb-4bd7-b920-902078f1456b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>duplicate_ping_times</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-1ee24a09-5327-49fa-8f03-b500aec90a16' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1ee24a09-5327-49fa-8f03-b500aec90a16' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-93233436-0919-487a-a810-937b876f3b5b' class='xr-var-data-in' type='checkbox'><label for='data-93233436-0919-487a-a810-937b876f3b5b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_manufacturer</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-49c47dc8-7bbb-4811-9623-6205e76b56ae' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-49c47dc8-7bbb-4811-9623-6205e76b56ae' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-6e4d739a-6ca7-4362-ba8e-0550e082b008' class='xr-var-data-in' type='checkbox'><label for='data-6e4d739a-6ca7-4362-ba8e-0550e082b008' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_model</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-3a18a8b9-9c7b-4783-8d30-323a57cc71c3' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-3a18a8b9-9c7b-4783-8d30-323a57cc71c3' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-fdba09b9-9dbc-450d-895b-c71a4137e17d' class='xr-var-data-in' type='checkbox'><label for='data-fdba09b9-9dbc-450d-895b-c71a4137e17d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_serial_number</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-f7e860a9-e587-4668-a0a4-f45ccdd7fdd6' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f7e860a9-e587-4668-a0a4-f45ccdd7fdd6' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9ca4a773-9c89-4608-b97f-aa92e508fef7' class='xr-var-data-in' type='checkbox'><label for='data-9ca4a773-9c89-4608-b97f-aa92e508fef7' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_software_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-8ea5a88b-3be8-4822-90ca-5654c878b362' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-8ea5a88b-3be8-4822-90ca-5654c878b362' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b518864f-9dca-445f-b716-47af73be743b' class='xr-var-data-in' type='checkbox'><label for='data-b518864f-9dca-445f-b716-47af73be743b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_software_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-a0059289-21ef-4d21-9203-0a05c36586b5' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a0059289-21ef-4d21-9203-0a05c36586b5' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-88c83cde-0400-459f-9c92-e22c4835116c' class='xr-var-data-in' type='checkbox'><label for='data-88c83cde-0400-459f-9c92-e22c4835116c' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sonar_type</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-1c3e58b8-bf8a-4553-add4-f8b509819a31' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1c3e58b8-bf8a-4553-add4-f8b509819a31' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-309c87ec-fc2f-4df7-b92e-d5c427ccf5ac' class='xr-var-data-in' type='checkbox'><label for='data-309c87ec-fc2f-4df7-b92e-d5c427ccf5ac' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>beam_mode</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-d0231605-f771-4842-a529-cceb9eba38ff' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d0231605-f771-4842-a529-cceb9eba38ff' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-bde1656e-87ea-4d4a-a70f-d6c5e176caab' class='xr-var-data-in' type='checkbox'><label for='data-bde1656e-87ea-4d4a-a70f-d6c5e176caab' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar/Beam_group1</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>conversion_equation_t</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-01420a4e-5540-4269-a169-5e96674be373' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-01420a4e-5540-4269-a169-5e96674be373' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7155bd55-41a5-40ab-8e21-d6431f4e08b3' class='xr-var-data-in' type='checkbox'><label for='data-7155bd55-41a5-40ab-8e21-d6431f4e08b3' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Sonar/Beam_group1</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>is_combined</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-7552a3e8-6be7-4d1c-9fc1-bdad525ef930' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-7552a3e8-6be7-4d1c-9fc1-bdad525ef930' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-929da885-f50c-42e3-905e-34f65bdf7b43' class='xr-var-data-in' type='checkbox'><label for='data-929da885-f50c-42e3-905e-34f65bdf7b43' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>combination_software_name</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-1f56aeef-faf5-4f8c-9086-681ef810df89' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1f56aeef-faf5-4f8c-9086-681ef810df89' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-cd09c7ee-76fa-4b63-b340-6f57cc84baa2' class='xr-var-data-in' type='checkbox'><label for='data-cd09c7ee-76fa-4b63-b340-6f57cc84baa2' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>combination_software_version</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-b612ed5a-9c30-4444-919c-a7067644c91e' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b612ed5a-9c30-4444-919c-a7067644c91e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ca74732a-79cf-4b28-98f7-9b1826d908a9' class='xr-var-data-in' type='checkbox'><label for='data-ca74732a-79cf-4b28-98f7-9b1826d908a9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>combination_time</span></div><div class='xr-var-dims'>(echodata_filename)</div><div class='xr-var-dtype'>&lt;U3</div><div class='xr-var-preview xr-preview'>&#x27;nan&#x27; &#x27;nan&#x27; &#x27;nan&#x27;</div><input id='attrs-30be4ad7-9277-45b3-bf1d-527e5462b859' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-30be4ad7-9277-45b3-bf1d-527e5462b859' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1a6f63ec-048e-4bc7-901d-a94aa2d4df6f' class='xr-var-data-in' type='checkbox'><label for='data-1a6f63ec-048e-4bc7-901d-a94aa2d4df6f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>echodata_group :</span></dt><dd>Provenance</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;nan&#x27;, &#x27;nan&#x27;, &#x27;nan&#x27;], dtype=&#x27;&lt;U3&#x27;)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-6d2ae1d0-089e-4f4e-aa99-8549f5da8a23' class='xr-section-summary-in' type='checkbox'  ><label for='section-6d2ae1d0-089e-4f4e-aa99-8549f5da8a23' class='xr-section-summary' >Indexes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-index-name'><div>filenames</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-b37bab1c-dcc3-485c-95c9-7ddafe20e79d' class='xr-index-data-in' type='checkbox'/><label for='index-b37bab1c-dcc3-485c-95c9-7ddafe20e79d' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Index([0, 1, 2, 3], dtype=&#x27;int64&#x27;, name=&#x27;filenames&#x27;))</pre></div></li><li class='xr-var-item'><div class='xr-index-name'><div>echodata_filename</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-25a62cba-ef3a-414a-9a21-7a575bf4473f' class='xr-index-data-in' type='checkbox'/><label for='index-25a62cba-ef3a-414a-9a21-7a575bf4473f' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Index([&#x27;Summer2017-D20170620-T011027.raw&#x27;, &#x27;Summer2017-D20170620-T014302.raw&#x27;,\n",
       "       &#x27;Summer2017-D20170620-T021537.raw&#x27;],\n",
       "      dtype=&#x27;object&#x27;, name=&#x27;echodata_filename&#x27;))</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-6efdc804-0abb-408b-b64a-363a5dc9effe' class='xr-section-summary-in' type='checkbox'  checked><label for='section-6efdc804-0abb-408b-b64a-363a5dc9effe' class='xr-section-summary' >Attributes: <span>(8)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>conversion_software_name :</span></dt><dd>echopype</dd><dt><span>conversion_software_version :</span></dt><dd>0.7.2.dev65+ga10d22bf</dd><dt><span>conversion_time :</span></dt><dd>2023-08-04T18:18:57Z</dd><dt><span>duplicate_ping_times :</span></dt><dd>0</dd><dt><span>is_combined :</span></dt><dd>True</dd><dt><span>combination_software_name :</span></dt><dd>echopype</dd><dt><span>combination_software_version :</span></dt><dd>0.7.2.dev65+ga10d22bf</dd><dt><span>combination_time :</span></dt><dd>2023-08-04T18:19:00Z</dd></dl></div></li></ul></div></div>"
      ],
      "text/plain": [
       "<xarray.Dataset>\n",
       "Dimensions:                       (filenames: 4, echodata_filename: 3)\n",
       "Coordinates:\n",
       "  * filenames                     (filenames) int64 0 1 2 3\n",
       "  * echodata_filename             (echodata_filename) <U32 'Summer2017-D20170...\n",
       "Data variables: (12/31)\n",
       "    source_filenames              (filenames) <U130 '/usr/mayorgadat/workmain...\n",
       "    conventions                   (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    keywords                      (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    sonar_convention_authority    (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    sonar_convention_name         (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    sonar_convention_version      (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    ...                            ...\n",
       "    beam_mode                     (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    conversion_equation_t         (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    is_combined                   (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    combination_software_name     (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    combination_software_version  (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "    combination_time              (echodata_filename) <U3 'nan' 'nan' 'nan'\n",
       "Attributes:\n",
       "    conversion_software_name:      echopype\n",
       "    conversion_software_version:   0.7.2.dev65+ga10d22bf\n",
       "    conversion_time:               2023-08-04T18:18:57Z\n",
       "    duplicate_ping_times:          0\n",
       "    is_combined:                   True\n",
       "    combination_software_name:     echopype\n",
       "    combination_software_version:  0.7.2.dev65+ga10d22bf\n",
       "    combination_time:              2023-08-04T18:19:00Z"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "combined_plus_ed4_ed['Provenance']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "ff337416-f347-4476-9e65-d6cc9743fcae",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python [conda env:echopype_dev]",
   "language": "python",
   "name": "conda-env-echopype_dev-py"
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
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   "file_extension": ".py",
   "mimetype": "text/x-python",
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   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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