value unc_up unc_lo author ref method 0.210 0.0900 0.0900 Nugent 2016AJ....152...63N NEATM 0.336 0.0863 0.0863 Masiero 2011ApJ...741...68M NEATM 0.380 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM 0.393 0.0831 0.0831 Masiero 2011ApJ...741...68M NEATM