value	unc_up	unc_lo	author	ref	method
6.35	1.430	1.430	Masiero	2020PSJ.....1....5M	NEATM
6.56	1.010	1.010	Nugent	2016AJ....152...63N	NEATM
6.84	0.600	0.600	Tedesco	2002AJ....123.1056T	STM
7.61	2.264	2.264	Masiero	2017AJ....154..168M	NEATM
8.55	0.147	0.147	Masiero	2011ApJ...741...68M	NEATM