value unc_up unc_lo author ref method 2.77 0.790 0.790 Nugent 2016AJ....152...63N NEATM 3.30 0.130 0.130 Masiero 2011ApJ...741...68M NEATM 3.68 0.960 0.960 Masiero 2012ApJ...759L...8M NEATM