value unc_up unc_lo author ref method 16.20 3.240 3.240 Ali-Lagoa 2018A&A...612A..85A NEATM 16.78 0.650 0.650 Usui 2011PASJ...63.1117U NEATM 17.30 3.460 3.460 Ali-Lagoa 2018A&A...612A..85A NEATM 18.36 0.240 0.240 Masiero 2011ApJ...741...68M NEATM 20.74 0.790 0.790 Masiero 2012ApJ...759L...8M NEATM