value unc_up unc_lo author ref method 2.95 0.765 0.765 Masiero 2011ApJ...741...68M NEATM 3.11 0.789 0.789 Masiero 2011ApJ...741...68M NEATM 3.32 0.840 0.840 Nugent 2016AJ....152...63N NEATM