value unc_up unc_lo author ref method 0.347 0.0600 0.0600 Masiero 2012ApJ...759L...8M NEATM 0.495 0.0742 0.0742 Masiero 2011ApJ...741...68M NEATM 0.530 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM