value	unc_up	unc_lo	author	ref	method
7.55	0.115	0.115	Masiero	2011ApJ...741...68M	NEATM
7.80	nan	nan	Ali-Lagoa	2016A&A...591A..14A	NEATM
8.30	nan	nan	Ali-Lagoa	2016A&A...591A..14A	NEATM