value unc_up unc_lo author ref method 4.52 0.860 0.860 Nugent 2016AJ....152...63N NEATM 4.67 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 4.95 0.094 0.094 Masiero 2011ApJ...741...68M NEATM