value unc_up unc_lo author ref method 5.34 0.106 0.106 Masiero 2011ApJ...741...68M NEATM 5.66 1.010 1.010 Nugent 2016AJ....152...63N NEATM 7.82 0.260 0.260 Masiero 2012ApJ...759L...8M NEATM