value	unc_up	unc_lo	author	ref	method
20.80	1.370	1.370	Usui	2011PASJ...63.1117U	NEATM
21.06	4.210	4.210	Ali-Lagoa	2018A&A...612A..85A	NEATM
21.36	0.170	0.170	Masiero	2014ApJ...791..121M	NEATM
22.50	0.187	0.187	Masiero	2011ApJ...741...68M	NEATM