value unc_up unc_lo author ref method 0.259 0.0681 0.0681 Masiero 2011ApJ...741...68M NEATM 0.310 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM 0.330 0.1400 0.1400 Nugent 2016AJ....152...63N NEATM