value unc_up unc_lo author ref method 7.72 2.340 2.340 Masiero 2021PSJ.....2..162M NEATM 9.59 0.137 0.137 Masiero 2011ApJ...741...68M NEATM 9.89 0.136 0.136 Masiero 2011ApJ...741...68M NEATM