value unc_up unc_lo author ref method 3.68 0.660 0.660 Masiero 2021PSJ.....2..162M NEATM 4.21 1.127 1.127 Masiero 2017AJ....154..168M NEATM 4.21 1.270 1.270 Masiero 2021PSJ.....2..162M NEATM