value unc_up unc_lo author ref method 5.29 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 5.45 0.029 0.029 Masiero 2011ApJ...741...68M NEATM 6.24 1.440 1.440 Nugent 2016AJ....152...63N NEATM