This file contains additional information regarding the format and content of the catalog csv file.

For a small number of reclassified objects, our adopted spectral type (column labeled 'Spectral Type') differs from the current spectroscopic type on TNS.
We include an additional column labeled 'Spectral Type Source', serving as a flag for the source of the adopted spectral type in the ATLAS100 paper.

The flag is set to a value from 1-4:
1: taken from TNS
2: public alert (e.g. ATel or AstroNote), but no accompanying TNS classification report
3: either published literature or reanalysis of publicly available photometric (e.g. ATLAS/ZTF light curves) and/or public spectroscopic data on TNS
4: unpublished private followup data