value unc_up unc_lo author ref method 10.08 0.136 0.136 Masiero 2011ApJ...741...68M NEATM 9.56 0.200 0.200 Masiero 2014ApJ...791..121M NEATM 9.68 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM