value	unc_up	unc_lo	author	ref	method
6.96	0.680	0.680	Usui	2011PASJ...63.1117U	NEATM
7.35	0.080	0.080	Masiero	2014ApJ...791..121M	NEATM
7.54	1.510	1.510	Ali-Lagoa	2018A&A...612A..85A	NEATM
7.67	0.069	0.069	Masiero	2011ApJ...741...68M	NEATM