value	unc_up	unc_lo	author	ref	method
6.97	1.940	1.940	Masiero	2021PSJ.....2..162M	NEATM
7.24	2.010	2.010	Masiero	2021PSJ.....2..162M	NEATM
7.29	1.720	1.720	Nugent	2016AJ....152...63N	NEATM
7.69	0.058	0.058	Masiero	2011ApJ...741...68M	NEATM