value	unc_up	unc_lo	author	ref	method
0.043	0.0286	0.0286	Masiero	2017AJ....154..168M	NEATM
0.047	0.0760	0.0760	Masiero	2012ApJ...759L...8M	NEATM
0.053	0.0065	0.0065	Masiero	2011ApJ...741...68M	NEATM