value unc_up unc_lo author ref method 11.49 0.300 0.300 Masiero 2014ApJ...791..121M NEATM 12.78 0.120 0.120 Masiero 2011ApJ...741...68M NEATM 14.21 0.260 0.260 Masiero 2012ApJ...759L...8M NEATM