value unc_up unc_lo author ref method 5.54 0.048 0.048 Masiero 2011ApJ...741...68M NEATM 5.80 0.090 0.090 Masiero 2014ApJ...791..121M NEATM 7.85 2.130 2.130 Nugent 2016AJ....152...63N NEATM 9.31 4.470 4.470 Masiero 2012ApJ...759L...8M NEATM