value	unc_up	unc_lo	author	ref	method
6.48	2.330	2.330	Nugent	2016AJ....152...63N	NEATM
7.93	0.236	0.236	Masiero	2011ApJ...741...68M	NEATM
8.04	0.036	0.036	Masiero	2011ApJ...741...68M	NEATM