value unc_up unc_lo author ref method 3.98 0.424 0.424 Masiero 2011ApJ...741...68M NEATM 4.06 1.060 1.060 Masiero 2017AJ....154..168M NEATM 4.28 0.953 0.953 Masiero 2017AJ....154..168M NEATM