value unc_up unc_lo author ref method 3.37 0.931 0.931 Masiero 2011ApJ...741...68M NEATM 3.57 0.710 0.710 Nugent 2016AJ....152...63N NEATM 3.63 0.510 0.510 Masiero 2011ApJ...741...68M NEATM