value	unc_up	unc_lo	author	ref	method
3.71	0.660	0.660	Nugent	2016AJ....152...63N	NEATM
4.83	1.225	1.225	Masiero	2017AJ....154..168M	NEATM
5.44	0.076	0.076	Masiero	2011ApJ...741...68M	NEATM