value unc_up unc_lo author ref method 5.13 0.178 0.178 Masiero 2011ApJ...741...68M NEATM 5.32 1.060 1.060 Nugent 2016AJ....152...63N NEATM 6.11 0.370 0.370 Masiero 2012ApJ...759L...8M NEATM