value unc_up unc_lo author ref method 7.08 0.190 0.190 Masiero 2014ApJ...791..121M NEATM 7.52 0.190 0.190 Masiero 2014ApJ...791..121M NEATM 7.57 0.042 0.042 Masiero 2011ApJ...741...68M NEATM 7.95 0.092 0.092 Masiero 2011ApJ...741...68M NEATM