value	unc_up	unc_lo	author	ref	method
6.03	1.250	1.250	Nugent	2016AJ....152...63N	NEATM
6.28	0.038	0.038	Masiero	2011ApJ...741...68M	NEATM
6.50	0.090	0.090	Masiero	2014ApJ...791..121M	NEATM
6.71	0.420	0.420	Masiero	2012ApJ...759L...8M	NEATM