value	unc_up	unc_lo	author	ref	method
4.16	1.290	1.290	Nugent	2016AJ....152...63N	NEATM
4.74	1.710	1.710	Masiero	2012ApJ...759L...8M	NEATM
6.11	0.128	0.128	Masiero	2011ApJ...741...68M	NEATM