value	unc_up	unc_lo	author	ref	method
0.033	0.0380	0.0380	Masiero	2012ApJ...759L...8M	NEATM
0.033	0.0170	0.0170	Masiero	2017AJ....154..168M	NEATM
0.040	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM
0.049	0.0250	0.0520	Masiero	2021PSJ.....2..162M	NEATM