value	unc_up	unc_lo	author	ref	method
6.73	1.721	1.721	Masiero	2017AJ....154..168M	NEATM
6.91	1.370	1.370	Masiero	2020PSJ.....1....5M	NEATM
7.13	0.180	0.180	Masiero	2014ApJ...791..121M	NEATM
7.63	0.058	0.058	Masiero	2011ApJ...741...68M	NEATM
7.77	2.180	2.180	Nugent	2016AJ....152...63N	NEATM