value unc_up unc_lo author ref method 12.18 2.910 2.910 Nugent 2016AJ....152...63N NEATM 13.80 0.105 0.105 Masiero 2011ApJ...741...68M NEATM 14.93 4.990 4.990 Masiero 2012ApJ...759L...8M NEATM