first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.3524 0.2280 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X C 0.2147 0.2280 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT