value unc_up unc_lo author ref method 10.25 0.260 0.260 Masiero 2012ApJ...759L...8M NEATM 7.68 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 8.28 0.158 0.158 Masiero 2011ApJ...741...68M NEATM