value	unc_up	unc_lo	author	ref	method
2.78	0.540	0.540	Nugent	2016AJ....152...63N	NEATM
3.47	0.261	0.261	Masiero	2011ApJ...741...68M	NEATM
3.48	0.900	0.900	Masiero	2021PSJ.....2..162M	NEATM