value unc_up unc_lo author ref method 2.81 0.690 0.690 Nugent 2016AJ....152...63N NEATM 3.35 0.720 0.720 Nugent 2016AJ....152...63N NEATM 4.55 0.105 0.105 Masiero 2011ApJ...741...68M NEATM