value	unc_up	unc_lo	author	ref	method
8.42	2.760	2.760	Nugent	2016AJ....152...63N	NEATM
8.50	1.890	1.890	Masiero	2012ApJ...759L...8M	NEATM
8.95	1.830	1.830	Masiero	2021PSJ.....2..162M	NEATM