value unc_up unc_lo author ref method 16.47 0.740 0.740 Masiero 2012ApJ...759L...8M NEATM 17.56 1.140 1.140 Usui 2011PASJ...63.1117U NEATM 18.32 3.660 3.660 Ali-Lagoa 2018A&A...612A..85A NEATM 18.81 0.370 0.370 Masiero 2014ApJ...791..121M NEATM 19.85 0.405 0.405 Masiero 2011ApJ...741...68M NEATM