value	unc_up	unc_lo	author	ref	method
0.052	0.0490	0.0490	Masiero	2012ApJ...759L...8M	NEATM
0.060	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM
0.065	0.0035	0.0035	Masiero	2011ApJ...741...68M	NEATM