value	unc_up	unc_lo	author	ref	method
0.049	0.0610	0.0610	Masiero	2012ApJ...759L...8M	NEATM
0.050	0.0500	0.0500	Nugent	2016AJ....152...63N	NEATM
0.051	0.0099	0.0099	Masiero	2011ApJ...741...68M	NEATM
0.054	0.0300	0.0670	Masiero	2021PSJ.....2..162M	NEATM