value	unc_up	unc_lo	author	ref	method
4.23	1.030	1.030	Nugent	2016AJ....152...63N	NEATM
5.19	0.103	0.103	Masiero	2011ApJ...741...68M	NEATM
5.40	1.060	1.060	Masiero	2017AJ....154..168M	NEATM