value	unc_up	unc_lo	author	ref	method
0.045	0.0237	0.0237	Masiero	2017AJ....154..168M	NEATM
0.050	0.0300	0.0300	Nugent	2016AJ....152...63N	NEATM
0.055	0.0220	0.0220	Masiero	2012ApJ...759L...8M	NEATM