value unc_up unc_lo author ref method 14.49 0.200 0.200 Masiero 2014ApJ...791..121M NEATM 15.07 0.640 0.640 Masiero 2012ApJ...759L...8M NEATM 15.55 0.042 0.042 Masiero 2011ApJ...741...68M NEATM