value	unc_up	unc_lo	author	ref	method
15.39	4.570	4.570	Nugent	2016AJ....152...63N	NEATM
15.92	0.300	0.300	Masiero	2012ApJ...759L...8M	NEATM
17.20	0.218	0.218	Masiero	2011ApJ...741...68M	NEATM