value	unc_up	unc_lo	author	ref	method
0.040	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM
0.076	0.0100	0.0100	Masiero	2012ApJ...759L...8M	NEATM
0.135	0.0197	0.0197	Masiero	2011ApJ...741...68M	NEATM
0.220	0.0500	0.0500	Masiero	2014ApJ...791..121M	NEATM