value unc_up unc_lo author ref method 11.08 0.180 0.180 Masiero 2014ApJ...791..121M NEATM 11.26 0.269 0.269 Masiero 2011ApJ...741...68M NEATM 13.28 0.710 0.710 Masiero 2012ApJ...759L...8M NEATM