value	unc_up	unc_lo	author	ref	method
6.24	0.092	0.092	Masiero	2011ApJ...741...68M	NEATM
6.68	2.195	2.195	Masiero	2017AJ....154..168M	NEATM
7.01	2.176	2.176	Masiero	2017AJ....154..168M	NEATM