| date_obs | datetime | Date of the observation of the associated frame | | time.obs |
| extinction | float | Extinction | mag / airmass | |
| extinction_diff | float | Extinction difference | mag / airmass | |
| extinction_err | float | Extinction error | mag / airmass | |
| mag_id | str | Identifier for the photometric band | | instr.filter phot.mag |
| shift | float | Shift of the extinction curve for this date_obs | mag / airmass | |
| shift_err | float | Error of the shift in the extinction curve | mag / airmass | |
