value	unc_up	unc_lo	author	ref	method
3.70	0.130	0.130	Masiero	2011ApJ...741...68M	NEATM
3.89	1.061	1.061	Masiero	2017AJ....154..168M	NEATM
4.22	0.780	0.780	Nugent	2016AJ....152...63N	NEATM