value	unc_up	unc_lo	author	ref	method
0.040	0.0200	0.0200	Nugent	2016AJ....152...63N	NEATM
0.048	0.0050	0.0050	Masiero	2012ApJ...759L...8M	NEATM
0.051	0.0177	0.0177	Masiero	2011ApJ...741...68M	NEATM
0.052	0.0280	0.0600	Masiero	2021PSJ.....2..162M	NEATM