value unc_up unc_lo author ref method 11.12 2.884 2.884 Masiero 2017AJ....154..168M NEATM 11.98 3.870 3.870 Masiero 2012ApJ...759L...8M NEATM 12.89 0.099 0.099 Masiero 2011ApJ...741...68M NEATM