value unc_up unc_lo author ref method 18.44 0.108 0.108 Masiero 2011ApJ...741...68M NEATM 20.33 5.830 5.830 Nugent 2016AJ....152...63N NEATM 21.00 1.460 1.460 Usui 2011PASJ...63.1117U NEATM 21.47 4.290 4.290 Ali-Lagoa 2018A&A...612A..85A NEATM