value unc_up unc_lo author ref method 0.188 0.0280 0.0280 Masiero 2012ApJ...759L...8M NEATM 0.243 0.0541 0.0541 Masiero 2011ApJ...741...68M NEATM 0.260 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM