value unc_up unc_lo author ref method 10.90 3.950 3.950 Nugent 2016AJ....152...63N NEATM 6.64 0.080 0.080 Masiero 2011ApJ...741...68M NEATM 6.68 0.224 0.224 Masiero 2011ApJ...741...68M NEATM