value unc_up unc_lo author ref method 0.220 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM 0.220 0.1000 0.1000 Nugent 2016AJ....152...63N NEATM 0.235 0.0597 0.0597 Masiero 2011ApJ...741...68M NEATM 0.247 0.0980 0.0980 Masiero 2012ApJ...759L...8M NEATM