value unc_up unc_lo author ref method 3.71 0.840 0.840 Nugent 2016AJ....152...63N NEATM 4.62 0.104 0.104 Masiero 2011ApJ...741...68M NEATM 4.72 0.143 0.143 Masiero 2011ApJ...741...68M NEATM