value	unc_up	unc_lo	author	ref	method
6.52	1.680	1.680	Nugent	2016AJ....152...63N	NEATM
6.54	1.680	1.680	Masiero	2012ApJ...759L...8M	NEATM
6.62	0.047	0.047	Masiero	2011ApJ...741...68M	NEATM