value	unc_up	unc_lo	author	ref	method
6.76	0.180	0.180	Masiero	2011ApJ...741...68M	NEATM
6.90	nan	nan	Ali-Lagoa	2016A&A...591A..14A	NEATM
7.20	nan	nan	Ali-Lagoa	2016A&A...591A..14A	NEATM