value unc_up unc_lo author ref method 2.94 0.406 0.406 Masiero 2011ApJ...741...68M NEATM 2.99 0.354 0.354 Masiero 2011ApJ...741...68M NEATM 3.56 0.830 0.830 Nugent 2016AJ....152...63N NEATM