value unc_up unc_lo author ref method 0.230 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM 0.325 0.1120 0.1120 Masiero 2012ApJ...759L...8M NEATM 0.332 0.1583 0.1583 Masiero 2011ApJ...741...68M NEATM