value unc_up unc_lo author ref method 0.220 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM 0.280 0.0250 0.0250 Masiero 2012ApJ...759L...8M NEATM 0.297 0.0507 0.0507 Masiero 2011ApJ...741...68M NEATM 0.350 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM