value	unc_up	unc_lo	author	ref	method
0.039	0.0322	0.0322	Masiero	2017AJ....154..168M	NEATM
0.041	0.0550	0.0550	Masiero	2012ApJ...759L...8M	NEATM
0.061	0.0064	0.0064	Masiero	2011ApJ...741...68M	NEATM