value	unc_up	unc_lo	author	ref	method
7.54	2.270	2.270	Nugent	2016AJ....152...63N	NEATM
7.59	2.150	2.150	Nugent	2016AJ....152...63N	NEATM
7.92	0.102	0.102	Masiero	2011ApJ...741...68M	NEATM