value	unc_up	unc_lo	author	ref	method
7.88	1.830	1.830	Nugent	2016AJ....152...63N	NEATM
7.99	0.200	0.200	Masiero	2014ApJ...791..121M	NEATM
8.51	0.184	0.184	Masiero	2011ApJ...741...68M	NEATM