first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C X 0.717000 0.242000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT C X 0.727000 0.237000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT