value unc_up unc_lo author ref method 13.82 0.150 0.150 Masiero 2014ApJ...791..121M NEATM 15.17 0.156 0.156 Masiero 2011ApJ...741...68M NEATM 15.52 4.650 4.650 Nugent 2016AJ....152...63N NEATM 15.96 1.050 1.050 Masiero 2012ApJ...759L...8M NEATM