value	unc_up	unc_lo	author	ref	method
17.35	1.460	1.460	Usui	2011PASJ...63.1117U	NEATM
17.89	3.580	3.580	Ali-Lagoa	2018A&A...612A..85A	NEATM
18.82	0.184	0.184	Masiero	2011ApJ...741...68M	NEATM