value	unc_up	unc_lo	author	ref	method
7.91	1.700	1.700	Nugent	2016AJ....152...63N	NEATM
8.06	0.150	0.150	Masiero	2014ApJ...791..121M	NEATM
8.72	0.143	0.143	Masiero	2011ApJ...741...68M	NEATM