value	unc_up	unc_lo	author	ref	method
6.18	0.180	0.180	Masiero	2012ApJ...759L...8M	NEATM
6.35	0.190	0.190	Masiero	2011ApJ...741...68M	NEATM
6.58	0.250	0.250	Usui	2011PASJ...63.1117U	NEATM
6.76	0.680	0.680	Ali-Lagoa	2018A&A...612A..85A	NEATM