value	unc_up	unc_lo	author	ref	method
0.044	0.0261	0.0261	Masiero	2017AJ....154..168M	NEATM
0.046	0.0410	0.0410	Masiero	2012ApJ...759L...8M	NEATM
0.050	0.0500	0.0500	Nugent	2016AJ....152...63N	NEATM
0.054	0.0280	0.0590	Masiero	2021PSJ.....2..162M	NEATM