value unc_up unc_lo author ref method 5.04 0.221 0.221 Masiero 2011ApJ...741...68M NEATM 5.67 1.360 1.360 Nugent 2016AJ....152...63N NEATM 5.85 0.700 0.700 Masiero 2011ApJ...741...68M NEATM 6.14 1.410 1.410 Nugent 2016AJ....152...63N NEATM