value	unc_up	unc_lo	author	ref	method
6.29	1.890	1.890	Nugent	2016AJ....152...63N	NEATM
6.93	1.810	1.810	Masiero	2020PSJ.....1....5M	NEATM
7.45	0.540	0.540	Masiero	2012ApJ...759L...8M	NEATM