value unc_up unc_lo author ref method 0.028 0.0068 0.0068 Masiero 2011ApJ...741...68M NEATM 0.040 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM 0.080 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM