value unc_up unc_lo author ref method 0.080 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM 0.089 0.0204 0.0204 Masiero 2011ApJ...741...68M NEATM 0.090 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM