value unc_up unc_lo author ref method 4.69 1.600 1.600 Nugent 2016AJ....152...63N NEATM 4.80 0.076 0.076 Masiero 2011ApJ...741...68M NEATM 5.14 0.030 0.030 Masiero 2011ApJ...741...68M NEATM