value	unc_up	unc_lo	author	ref	method
3.26	0.890	0.890	Nugent	2016AJ....152...63N	NEATM
3.47	0.425	0.425	Masiero	2011ApJ...741...68M	NEATM
3.85	1.450	1.450	Masiero	2021PSJ.....2..162M	NEATM