value unc_up unc_lo author ref method 0.267 0.0223 0.0223 Masiero 2011ApJ...741...68M NEATM 0.283 0.0256 0.0256 Masiero 2011ApJ...741...68M NEATM 0.290 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM 0.290 0.0600 0.0600 Masiero 2014ApJ...791..121M NEATM