value	unc_up	unc_lo	author	ref	method
0.238	0.0393	0.0393	Masiero	2011ApJ...741...68M	NEATM
0.254	0.0913	0.0913	Masiero	2017AJ....154..168M	NEATM
0.270	0.1300	0.1300	Nugent	2016AJ....152...63N	NEATM