value unc_up unc_lo author ref method 3.68 0.810 0.810 Nugent 2016AJ....152...63N NEATM 4.99 0.220 0.220 Masiero 2011ApJ...741...68M NEATM 5.06 1.607 1.607 Masiero 2017AJ....154..168M NEATM 5.69 0.172 0.172 Masiero 2011ApJ...741...68M NEATM