value unc_up unc_lo author ref method 18.44 2.800 2.800 Masiero 2012ApJ...759L...8M NEATM 21.25 1.290 1.290 Usui 2011PASJ...63.1117U NEATM 21.62 4.320 4.320 Ali-Lagoa 2018A&A...612A..85A NEATM