value unc_up unc_lo author ref method 16.71 3.340 3.340 Ali-Lagoa 2018A&A...612A..85A NEATM 17.42 0.790 0.790 Usui 2011PASJ...63.1117U NEATM 17.47 3.490 3.490 Ali-Lagoa 2018A&A...612A..85A NEATM 17.84 0.370 0.370 Masiero 2011ApJ...741...68M NEATM 18.51 0.179 0.179 Masiero 2011ApJ...741...68M NEATM