first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.3028 0.2020 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X C 0.1417 0.2020 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT