value unc_up unc_lo author ref method 16.10 0.190 0.190 Masiero 2014ApJ...791..121M NEATM 16.70 0.187 0.187 Masiero 2011ApJ...741...68M NEATM 9.25 0.570 0.570 Masiero 2012ApJ...759L...8M NEATM