This analysis does not include some of the systems that were looked at before; however, adding these systems would not change our conclusions about the lack of correlation between latitude and sinuosity. We have tested whether the combined data set of maximum sinuosities from the systems in Clark and Pickering (1996) plus the ones added in \citet{Sylvester_2013} and in this study (Zaire, Danube, Knight Inlet, Nile, Tanzania) shows a robust latitude–sinuosity correlation. The resulting scatterplot suggests that there is no correlation (Fig. \ref{562478}); the R2 value for the linear regression is 0.041. In other words, only about 4% of the variance in the peak sinuosities might be caused by a latitudinal effect. More importantly, the large p- value (0.378) for the regression suggests that any apparent correlation is actually not statistically significant.