value unc_up unc_lo author ref method 0.228 0.0397 0.0397 Masiero 2011ApJ...741...68M NEATM 0.240 0.0900 0.0900 Nugent 2016AJ....152...63N NEATM 0.250 0.0700 0.0700 Masiero 2014ApJ...791..121M NEATM