value	unc_up	unc_lo	author	ref	method
6.47	0.202	0.202	Masiero	2011ApJ...741...68M	NEATM
6.77	1.973	1.973	Masiero	2017AJ....154..168M	NEATM
7.33	1.920	1.920	Masiero	2017AJ....154..168M	NEATM