value unc_up unc_lo author ref method 0.171 0.0200 0.0200 Masiero 2012ApJ...759L...8M NEATM 0.269 0.0504 0.0504 Masiero 2011ApJ...741...68M NEATM 0.280 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM