value	unc_up	unc_lo	author	ref	method
4.00	0.590	0.590	Nugent	2016AJ....152...63N	NEATM
5.67	0.083	0.083	Masiero	2011ApJ...741...68M	NEATM
5.79	1.640	1.640	Masiero	2020PSJ.....1....5M	NEATM
6.11	1.600	1.600	Masiero	2021PSJ.....2..162M	NEATM
6.20	1.780	1.780	Masiero	2012ApJ...759L...8M	NEATM