value	unc_up	unc_lo	author	ref	method
3.15	0.590	0.590	Nugent	2016AJ....152...63N	NEATM
3.66	0.970	0.970	Masiero	2012ApJ...759L...8M	NEATM
4.17	0.167	0.167	Masiero	2011ApJ...741...68M	NEATM