value	unc_up	unc_lo	author	ref	method
0.045	0.0211	0.0211	Masiero	2017AJ....154..168M	NEATM
0.049	0.0260	0.0540	Masiero	2021PSJ.....2..162M	NEATM
0.050	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM
0.063	0.0149	0.0149	Masiero	2011ApJ...741...68M	NEATM