value	unc_up	unc_lo	author	ref	method
4.11	1.010	1.010	Masiero	2020PSJ.....1....5M	NEATM
4.21	0.143	0.143	Masiero	2011ApJ...741...68M	NEATM
4.32	1.390	1.390	Nugent	2016AJ....152...63N	NEATM
4.40	1.433	1.433	Masiero	2017AJ....154..168M	NEATM