first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.6281 0.4050 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT Q 0.439 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT