value	unc_up	unc_lo	author	ref	method
4.15	1.215	1.215	Masiero	2017AJ....154..168M	NEATM
4.55	1.298	1.298	Masiero	2017AJ....154..168M	NEATM
6.33	0.285	0.285	Masiero	2011ApJ...741...68M	NEATM