value unc_up unc_lo author ref method 14.31 0.174 0.174 Masiero 2011ApJ...741...68M NEATM 14.41 3.870 3.870 Nugent 2016AJ....152...63N NEATM 15.59 6.120 6.120 Nugent 2016AJ....152...63N NEATM