value	unc_up	unc_lo	author	ref	method
6.70	0.038	0.038	Masiero	2011ApJ...741...68M	NEATM
7.11	1.770	1.770	Masiero	2020PSJ.....1....5M	NEATM
7.54	2.090	2.090	Masiero	2012ApJ...759L...8M	NEATM
7.63	2.310	2.310	Nugent	2016AJ....152...63N	NEATM