value unc_up unc_lo author ref method 10.02 0.200 0.200 Masiero 2012ApJ...759L...8M NEATM 10.16 0.148 0.148 Masiero 2011ApJ...741...68M NEATM 9.89 0.175 0.175 Masiero 2011ApJ...741...68M NEATM