value	unc_up	unc_lo	author	ref	method
17.39	5.250	5.250	Nugent	2016AJ....152...63N	NEATM
18.58	8.030	8.030	Nugent	2016AJ....152...63N	NEATM
21.08	0.570	0.570	Masiero	2012ApJ...759L...8M	NEATM