value unc_up unc_lo author ref method 4.31 1.000 1.000 Nugent 2016AJ....152...63N NEATM 4.48 0.199 0.199 Masiero 2011ApJ...741...68M NEATM 4.70 0.298 0.298 Masiero 2011ApJ...741...68M NEATM