first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C X 0.686000 0.313000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT C X 0.707000 0.293000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT