value	unc_up	unc_lo	author	ref	method
4.65	1.420	1.420	Nugent	2016AJ....152...63N	NEATM
4.79	1.310	1.310	Masiero	2020PSJ.....1....5M	NEATM
6.51	0.067	0.067	Masiero	2011ApJ...741...68M	NEATM