value unc_up unc_lo author ref method 11.86 0.180 0.180 Masiero 2014ApJ...791..121M NEATM 12.49 0.228 0.228 Masiero 2011ApJ...741...68M NEATM 13.14 1.250 1.250 Masiero 2012ApJ...759L...8M NEATM