value	unc_up	unc_lo	author	ref	method
6.34	1.380	1.380	Nugent	2016AJ....152...63N	NEATM
7.20	0.120	0.120	Masiero	2014ApJ...791..121M	NEATM
7.23	0.108	0.108	Masiero	2011ApJ...741...68M	NEATM