value	unc_up	unc_lo	author	ref	method
0.045	0.0276	0.0276	Masiero	2017AJ....154..168M	NEATM
0.062	0.0720	0.0720	Masiero	2012ApJ...759L...8M	NEATM
0.080	0.0126	0.0126	Masiero	2011ApJ...741...68M	NEATM