value unc_up unc_lo author ref method 0.045 0.0080 0.0080 Masiero 2011ApJ...741...68M NEATM 0.060 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM 0.080 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM