value unc_up unc_lo author ref method 7.46 0.180 0.180 Masiero 2011ApJ...741...68M NEATM 9.00 0.159 0.159 Masiero 2011ApJ...741...68M NEATM 9.38 2.810 2.810 Nugent 2016AJ....152...63N NEATM