value unc_up unc_lo author ref method 17.92 0.440 0.440 Masiero 2012ApJ...759L...8M NEATM 26.39 0.440 0.440 Masiero 2014ApJ...791..121M NEATM 32.34 0.177 0.177 Masiero 2011ApJ...741...68M NEATM