value unc_up unc_lo author ref method 0.205 0.0270 0.0270 Masiero 2012ApJ...759L...8M NEATM 0.215 0.0185 0.0185 Masiero 2011ApJ...741...68M NEATM 0.230 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM