value	unc_up	unc_lo	author	ref	method
16.36	5.690	5.690	Nugent	2016AJ....152...63N	NEATM
18.56	5.460	5.460	Nugent	2016AJ....152...63N	NEATM
21.93	0.157	0.157	Masiero	2011ApJ...741...68M	NEATM