value unc_up unc_lo author ref method 4.02 0.750 0.750 Nugent 2016AJ....152...63N NEATM 4.34 0.376 0.376 Masiero 2011ApJ...741...68M NEATM 4.76 0.155 0.155 Masiero 2011ApJ...741...68M NEATM