value unc_up unc_lo author ref method 5.36 0.079 0.079 Masiero 2011ApJ...741...68M NEATM 6.86 1.850 1.850 Nugent 2016AJ....152...63N NEATM 7.19 1.850 1.850 Nugent 2016AJ....152...63N NEATM