value unc_up unc_lo author ref method 7.62 0.165 0.165 Masiero 2011ApJ...741...68M NEATM 8.09 0.128 0.128 Masiero 2011ApJ...741...68M NEATM 8.90 2.860 2.860 Nugent 2016AJ....152...63N NEATM