first_spec_class	second_spec_class	prob_first_spec_class	prob_second_spec_class	taxonomy	wavelength	author	ref	method
S	M	0.660000	0.330000	Mahlke	VIS	Mahlke	2022A&A...665A..26M	SPEC
Xc				Bus	VIS	Bus	2002Icar..158..146B	SPEC
Xk				Bus-DeMeo	VISNIR	Hasegawa	2024AJ....167..224H	SPEC