value	unc_up	unc_lo	author	ref	method
0.040	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM
0.045	0.0072	0.0072	Masiero	2011ApJ...741...68M	NEATM
0.045	0.0390	0.0390	Masiero	2012ApJ...759L...8M	NEATM
0.048	0.0279	0.0279	Masiero	2017AJ....154..168M	NEATM