first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.2841 0.2050 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X C 0.1454 0.2050 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT