value unc_up unc_lo author ref method 48.57 4.080 4.080 Usui 2011PASJ...63.1117U NEATM 49.39 9.880 9.880 Ali-Lagoa 2018A&A...612A..85A NEATM 51.92 3.360 3.360 Grav 2012ApJ...759...49G NEATM 57.59 0.750 0.750 Grav 2011ApJ...742...40G NEATM