value	unc_up	unc_lo	author	ref	method
6.69	2.019	2.019	Masiero	2017AJ....154..168M	NEATM
6.98	0.129	0.129	Masiero	2011ApJ...741...68M	NEATM
7.16	2.180	2.180	Masiero	2021PSJ.....2..162M	NEATM
7.68	2.160	2.160	Masiero	2020PSJ.....1....5M	NEATM