first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.5061 0.3740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X C 0.2748 0.3740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT