value unc_up unc_lo author ref method 0.301 0.0375 0.0375 Masiero 2011ApJ...741...68M NEATM 0.303 0.0540 0.0540 Masiero 2012ApJ...759L...8M NEATM 0.320 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM