value	unc_up	unc_lo	author	ref	method
5.78	0.600	0.600	Usui	2011PASJ...63.1117U	NEATM
6.15	0.120	0.120	Masiero	2012ApJ...759L...8M	NEATM
6.15	1.230	1.230	Ali-Lagoa	2018A&A...612A..85A	NEATM