value unc_up unc_lo author ref method 19.64 1.350 1.350 Usui 2011PASJ...63.1117U NEATM 20.27 4.050 4.050 Ali-Lagoa 2018A&A...612A..85A NEATM 20.35 5.810 5.810 Nugent 2016AJ....152...63N NEATM 20.60 0.289 0.289 Masiero 2011ApJ...741...68M NEATM 24.04 9.740 9.740 Nugent 2016AJ....152...63N NEATM