value	unc_up	unc_lo	author	ref	method
4.26	1.620	1.620	Nugent	2016AJ....152...63N	NEATM
4.53	0.207	0.207	Masiero	2011ApJ...741...68M	NEATM
4.88	0.218	0.218	Masiero	2011ApJ...741...68M	NEATM