value unc_up unc_lo author ref method 21.40 7.830 7.830 Nugent 2016AJ....152...63N NEATM 23.39 0.159 0.159 Masiero 2011ApJ...741...68M NEATM 28.60 7.650 7.650 Nugent 2016AJ....152...63N NEATM 31.21 6.240 6.240 Ali-Lagoa 2018A&A...612A..85A NEATM 31.93 1.420 1.420 Usui 2011PASJ...63.1117U NEATM