value	unc_up	unc_lo	author	ref	method
0.243	0.0200	0.0200	Masiero	2012ApJ...759L...8M	NEATM
0.245	0.0387	0.0387	Masiero	2011ApJ...741...68M	NEATM
0.270	0.0400	0.0400	Masiero	2014ApJ...791..121M	NEATM
0.270	0.1600	0.1600	Nugent	2016AJ....152...63N	NEATM