value unc_up unc_lo author ref method 0.209 0.0450 0.0450 Masiero 2012ApJ...759L...8M NEATM 0.293 0.1315 0.1315 Masiero 2011ApJ...741...68M NEATM 0.300 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM