value unc_up unc_lo author ref method 5.21 1.300 1.300 Masiero 2021PSJ.....2..162M NEATM 5.38 0.165 0.165 Masiero 2011ApJ...741...68M NEATM 5.82 0.047 0.047 Masiero 2011ApJ...741...68M NEATM