value unc_up unc_lo author ref method 5.91 0.820 0.820 Nugent 2016AJ....152...63N NEATM 7.40 0.200 0.200 Masiero 2012ApJ...759L...8M NEATM 8.98 0.260 0.260 Masiero 2014ApJ...791..121M NEATM 9.54 0.053 0.053 Masiero 2011ApJ...741...68M NEATM