value	unc_up	unc_lo	author	ref	method
5.35	1.440	1.440	Nugent	2016AJ....152...63N	NEATM
5.43	0.250	0.250	Masiero	2012ApJ...759L...8M	NEATM
6.09	0.138	0.138	Masiero	2011ApJ...741...68M	NEATM