value unc_up unc_lo author ref method 5.76 1.290 1.290 Nugent 2016AJ....152...63N NEATM 5.78 0.230 0.230 Masiero 2012ApJ...759L...8M NEATM 5.94 0.100 0.100 Masiero 2014ApJ...791..121M NEATM 6.15 0.147 0.147 Masiero 2011ApJ...741...68M NEATM