value	unc_up	unc_lo	author	ref	method
7.46	1.300	1.300	Nugent	2016AJ....152...63N	NEATM
7.76	0.710	0.710	Masiero	2012ApJ...759L...8M	NEATM
8.48	0.170	0.170	Masiero	2014ApJ...791..121M	NEATM
9.02	0.070	0.070	Masiero	2011ApJ...741...68M	NEATM