value unc_up unc_lo author ref method 16.72 0.470 0.470 Masiero 2012ApJ...759L...8M NEATM 16.82 0.200 0.200 Masiero 2014ApJ...791..121M NEATM 17.12 4.420 4.420 Nugent 2016AJ....152...63N NEATM 18.30 0.203 0.203 Masiero 2011ApJ...741...68M NEATM