value	unc_up	unc_lo	author	ref	method
4.23	1.290	1.290	Nugent	2016AJ....152...63N	NEATM
5.04	0.100	0.100	Masiero	2012ApJ...759L...8M	NEATM
5.96	0.047	0.047	Masiero	2011ApJ...741...68M	NEATM