value unc_up unc_lo author ref method 0.200 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM 0.314 0.0520 0.0520 Masiero 2012ApJ...759L...8M NEATM 0.420 0.0835 0.0835 Masiero 2011ApJ...741...68M NEATM 0.460 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM