value unc_up unc_lo author ref method 0.166 0.0378 0.0378 Masiero 2011ApJ...741...68M NEATM 0.264 0.0558 0.0558 Masiero 2011ApJ...741...68M NEATM 0.318 0.0810 0.0810 Masiero 2012ApJ...759L...8M NEATM