value unc_up unc_lo author ref method 0.290 0.1300 0.1300 Nugent 2016AJ....152...63N NEATM 0.296 0.0276 0.0276 Masiero 2011ApJ...741...68M NEATM 0.327 0.2971 0.2971 Masiero 2011ApJ...741...68M NEATM