value unc_up unc_lo author ref method 8.94 0.110 0.110 Masiero 2014ApJ...791..121M NEATM 9.33 0.182 0.182 Masiero 2011ApJ...741...68M NEATM 9.98 0.140 0.140 Masiero 2011ApJ...741...68M NEATM