value	unc_up	unc_lo	author	ref	method
4.04	1.020	1.020	Nugent	2016AJ....152...63N	NEATM
4.15	0.110	0.110	Masiero	2012ApJ...759L...8M	NEATM
4.17	0.102	0.102	Masiero	2011ApJ...741...68M	NEATM