value	unc_up	unc_lo	author	ref	method
3.16	0.710	0.710	Nugent	2016AJ....152...63N	NEATM
3.87	0.043	0.043	Masiero	2011ApJ...741...68M	NEATM
3.99	0.070	0.070	Masiero	2014ApJ...791..121M	NEATM