value unc_up unc_lo author ref method 20.95 4.190 4.190 Ali-Lagoa 2018A&A...612A..85A NEATM 21.13 4.230 4.230 Ali-Lagoa 2018A&A...612A..85A NEATM 21.47 0.600 0.600 Usui 2011PASJ...63.1117U NEATM 21.68 0.100 0.100 Masiero 2014ApJ...791..121M NEATM 22.20 0.281 0.281 Masiero 2011ApJ...741...68M NEATM 22.22 2.760 2.760 Masiero 2012ApJ...759L...8M NEATM