value	unc_up	unc_lo	author	ref	method
0.029	0.0150	0.0150	Masiero	2017AJ....154..168M	NEATM
0.041	0.0770	0.0770	Masiero	2012ApJ...759L...8M	NEATM
0.088	0.0242	0.0242	Masiero	2011ApJ...741...68M	NEATM