value unc_up unc_lo author ref method 14.29 0.210 0.210 Masiero 2014ApJ...791..121M NEATM 15.06 0.310 0.310 Masiero 2012ApJ...759L...8M NEATM 15.62 0.271 0.271 Masiero 2011ApJ...741...68M NEATM