value unc_up unc_lo author ref method 13.19 4.530 4.530 Nugent 2016AJ....152...63N NEATM 14.79 0.420 0.420 Masiero 2012ApJ...759L...8M NEATM 17.09 3.420 3.420 Ali-Lagoa 2018A&A...612A..85A NEATM 17.22 0.870 0.870 Usui 2011PASJ...63.1117U NEATM 20.17 0.112 0.112 Masiero 2011ApJ...741...68M NEATM