value unc_up unc_lo author ref method 5.62 0.362 0.362 Masiero 2011ApJ...741...68M NEATM 5.91 1.470 1.470 Nugent 2016AJ....152...63N NEATM 6.43 0.930 0.930 Masiero 2012ApJ...759L...8M NEATM