value	unc_up	unc_lo	author	ref	method
0.230	0.1500	0.1500	Nugent	2016AJ....152...63N	NEATM
0.246	0.0700	0.0700	Masiero	2012ApJ...759L...8M	NEATM
0.321	0.0424	0.0424	Masiero	2011ApJ...741...68M	NEATM