first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.1463 0.6520 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.7071 0.6520 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT SQ 0.06 Bus VIS Carvano 2010A&A...510A..43C PHOT