value	unc_up	unc_lo	author	ref	method
4.21	0.870	0.870	Nugent	2016AJ....152...63N	NEATM
4.88	1.592	1.592	Masiero	2017AJ....154..168M	NEATM
5.93	0.239	0.239	Masiero	2011ApJ...741...68M	NEATM