value	unc_up	unc_lo	author	ref	method
6.55	1.828	1.828	Masiero	2017AJ....154..168M	NEATM
6.88	0.407	0.407	Masiero	2011ApJ...741...68M	NEATM
8.05	2.454	2.454	Masiero	2017AJ....154..168M	NEATM
8.09	0.590	0.590	Masiero	2012ApJ...759L...8M	NEATM