value unc_up unc_lo author ref method 3.46 0.840 0.840 Nugent 2016AJ....152...63N NEATM 4.60 0.113 0.113 Masiero 2011ApJ...741...68M NEATM 4.86 0.396 0.396 Masiero 2011ApJ...741...68M NEATM