the transect used in https://github.com/diysco2/analysis. note coords are in UTM 10N

transect_epicc2sp_woss.geojson

{
"type": "FeatureCollection",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:EPSG::26910" } },
"features": [
{ "type": "Feature", "properties": { "Id": 0, "area": 12716216.0 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 488520.598851961665787, 5461755.1524344291538 ], [ 489415.018160420644563, 5462331.271903880871832 ], [ 493683.150351082382258, 5454802.500277180224657 ], [ 495503.632907089369837, 5451565.166824344545603 ], [ 494273.844967161712702, 5451569.373492551036179 ], [ 492585.826064964581747, 5454613.229521058499813 ], [ 488520.598851961665787, 5461755.1524344291538 ] ] ] } }
]
}