value	unc_up	unc_lo	author	ref	method
6.59	1.660	1.660	Masiero	2021PSJ.....2..162M	NEATM
6.79	1.660	1.660	Nugent	2016AJ....152...63N	NEATM
7.48	2.169	2.169	Masiero	2017AJ....154..168M	NEATM
8.41	2.750	2.750	Masiero	2012ApJ...759L...8M	NEATM