value unc_up unc_lo author ref method 12.25 1.590 1.590 Masiero 2012ApJ...759L...8M NEATM 16.51 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 16.79 0.059 0.059 Masiero 2011ApJ...741...68M NEATM