value	unc_up	unc_lo	author	ref	method
0.025	0.0145	0.0145	Masiero	2017AJ....154..168M	NEATM
0.043	0.0049	0.0049	Masiero	2011ApJ...741...68M	NEATM
0.043	0.0059	0.0059	Masiero	2011ApJ...741...68M	NEATM
0.070	0.0500	0.0500	Nugent	2016AJ....152...63N	NEATM