pandas DataFrame with id index and numric features
the calculation for the removable is 2 standard deviation
DatetimeIndex(['2021-10-10 07:47:00', '2021-10-10 07:47:00',
'2021-10-10 07:47:00', '2021-10-10 07:47:00',
'2021-10-10 07:47:00', '2021-10-10 07:47:00',
'2021-10-10 07:47:00', '2021-10-10 07:47:00',
'2021-10-10 07:47:00', '2021-10-10 07:47:00',
...
'2021-10-17 09:07:00', '2021-10-17 09:07:00',
'2021-10-17 09:07:00', '2021-10-17 09:07:00',