value	unc_up	unc_lo	author	ref	method
0.235	0.0600	0.0600	Masiero	2012ApJ...759L...8M	NEATM
0.240	0.1300	0.1300	Nugent	2016AJ....152...63N	NEATM
0.253	0.0552	0.0552	Masiero	2011ApJ...741...68M	NEATM