value	unc_up	unc_lo	author	ref	method
0.026	0.0148	0.0148	Masiero	2017AJ....154..168M	NEATM
0.034	0.0510	0.0510	Masiero	2012ApJ...759L...8M	NEATM
0.046	0.0059	0.0059	Masiero	2011ApJ...741...68M	NEATM