value	unc_up	unc_lo	author	ref	method
0.036	0.0264	0.0264	Masiero	2017AJ....154..168M	NEATM
0.038	0.0520	0.0520	Masiero	2012ApJ...759L...8M	NEATM
0.050	0.0800	0.0800	Nugent	2016AJ....152...63N	NEATM
0.091	0.0060	0.0060	Masiero	2011ApJ...741...68M	NEATM