value unc_up unc_lo author ref method 4.26 0.870 0.870 Nugent 2016AJ....152...63N NEATM 4.74 1.020 1.020 Masiero 2011ApJ...741...68M NEATM 5.16 0.388 0.388 Masiero 2011ApJ...741...68M NEATM