value unc_up unc_lo author ref method 2.46 0.520 0.520 Masiero 2021PSJ.....2..162M NEATM 2.57 0.643 0.643 Masiero 2017AJ....154..168M NEATM 2.77 0.480 0.480 Masiero 2021PSJ.....2..162M NEATM