value	unc_up	unc_lo	author	ref	method
3.21	0.840	0.840	Nugent	2016AJ....152...63N	NEATM
3.53	0.150	0.150	Masiero	2012ApJ...759L...8M	NEATM
4.11	0.115	0.115	Masiero	2011ApJ...741...68M	NEATM