value unc_up unc_lo author ref method 5.39 0.144 0.144 Masiero 2011ApJ...741...68M NEATM 5.56 1.260 1.260 Nugent 2016AJ....152...63N NEATM 5.98 0.359 0.359 Masiero 2011ApJ...741...68M NEATM