value	unc_up	unc_lo	author	ref	method
6.50	0.030	0.030	Masiero	2014ApJ...791..121M	NEATM
6.77	0.026	0.026	Masiero	2011ApJ...741...68M	NEATM
7.70	1.540	1.540	Ali-Lagoa	2018A&A...612A..85A	NEATM
7.75	0.560	0.560	Usui	2011PASJ...63.1117U	NEATM