value	unc_up	unc_lo	author	ref	method
4.50	1.470	1.470	Nugent	2016AJ....152...63N	NEATM
5.31	0.176	0.176	Masiero	2011ApJ...741...68M	NEATM
5.51	0.080	0.080	Masiero	2012ApJ...759L...8M	NEATM