value	unc_up	unc_lo	author	ref	method
3.30	0.880	0.880	Nugent	2016AJ....152...63N	NEATM
3.54	0.740	0.740	Masiero	2012ApJ...759L...8M	NEATM
4.19	0.112	0.112	Masiero	2011ApJ...741...68M	NEATM