value unc_up unc_lo author ref method 0.100 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM 0.146 0.0653 0.0653 Masiero 2017AJ....154..168M NEATM 0.187 0.0865 0.0865 Masiero 2011ApJ...741...68M NEATM