value	unc_up	unc_lo	author	ref	method
6.58	1.190	1.190	Nugent	2016AJ....152...63N	NEATM
7.03	0.190	0.190	Masiero	2012ApJ...759L...8M	NEATM
7.21	0.140	0.140	Masiero	2014ApJ...791..121M	NEATM
7.78	0.058	0.058	Masiero	2011ApJ...741...68M	NEATM