first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method B C 0.3693 0.2520 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X C 0.3482 0.2520 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT