value	unc_up	unc_lo	author	ref	method
0.030	0.0200	0.0200	Nugent	2016AJ....152...63N	NEATM
0.044	0.0190	0.0190	Masiero	2012ApJ...759L...8M	NEATM
0.046	0.0072	0.0072	Masiero	2011ApJ...741...68M	NEATM