value	unc_up	unc_lo	author	ref	method
6.18	0.126	0.126	Masiero	2011ApJ...741...68M	NEATM
6.29	1.433	1.433	Masiero	2017AJ....154..168M	NEATM
6.45	2.030	2.030	Nugent	2016AJ....152...63N	NEATM
6.49	1.850	1.850	Masiero	2020PSJ.....1....5M	NEATM