value	unc_up	unc_lo	author	ref	method
0.042	0.0253	0.0253	Masiero	2017AJ....154..168M	NEATM
0.047	0.0073	0.0073	Masiero	2011ApJ...741...68M	NEATM
0.050	0.0600	0.0600	Nugent	2016AJ....152...63N	NEATM
0.062	0.0276	0.0276	Masiero	2017AJ....154..168M	NEATM