value	unc_up	unc_lo	author	ref	method
7.58	2.030	2.030	Nugent	2016AJ....152...63N	NEATM
7.77	2.140	2.140	Masiero	2021PSJ.....2..162M	NEATM
7.88	0.170	0.170	Masiero	2012ApJ...759L...8M	NEATM
8.09	2.570	2.570	Masiero	2021PSJ.....2..162M	NEATM