value unc_up unc_lo author ref method 8.55 0.320 0.320 Masiero 2014ApJ...791..121M NEATM 8.68 0.059 0.059 Masiero 2011ApJ...741...68M NEATM 8.94 0.130 0.130 Masiero 2014ApJ...791..121M NEATM 9.59 0.136 0.136 Masiero 2011ApJ...741...68M NEATM