value	unc_up	unc_lo	author	ref	method
4.74	1.130	1.130	Nugent	2016AJ....152...63N	NEATM
4.95	1.390	1.390	Masiero	2011ApJ...741...68M	NEATM
4.96	1.390	1.390	Masiero	2021PSJ.....2..162M	NEATM