value	unc_up	unc_lo	author	ref	method
4.31	1.200	1.200	Nugent	2016AJ....152...63N	NEATM
4.46	1.010	1.010	Masiero	2021PSJ.....2..162M	NEATM
5.10	1.710	1.710	Masiero	2012ApJ...759L...8M	NEATM