value	unc_up	unc_lo	author	ref	method
4.07	1.010	1.010	Nugent	2016AJ....152...63N	NEATM
4.25	0.210	0.210	Masiero	2012ApJ...759L...8M	NEATM
4.35	0.083	0.083	Masiero	2011ApJ...741...68M	NEATM