value	unc_up	unc_lo	author	ref	method
0.038	0.0263	0.0263	Masiero	2017AJ....154..168M	NEATM
0.046	0.0210	0.0210	Masiero	2012ApJ...759L...8M	NEATM
0.051	0.0385	0.0385	Masiero	2017AJ....154..168M	NEATM
0.074	0.0172	0.0172	Masiero	2011ApJ...741...68M	NEATM