value	unc_up	unc_lo	author	ref	method
4.18	0.670	0.670	Nugent	2016AJ....152...63N	NEATM
4.65	0.115	0.115	Masiero	2011ApJ...741...68M	NEATM
5.58	1.500	1.500	Nugent	2016AJ....152...63N	NEATM