value unc_up unc_lo author ref method 7.53 0.132 0.132 Masiero 2011ApJ...741...68M NEATM 7.68 1.640 1.640 Nugent 2016AJ....152...63N NEATM 7.95 0.320 0.320 Masiero 2012ApJ...759L...8M NEATM