value	unc_up	unc_lo	author	ref	method
15.26	4.960	4.960	Nugent	2016AJ....152...63N	NEATM
16.93	0.300	0.300	Masiero	2012ApJ...759L...8M	NEATM
18.53	0.107	0.107	Masiero	2011ApJ...741...68M	NEATM