Scheme I approximates the 2-D dwell-time distributions and the dependency difference plots for data at 20°C. (A–D) Predicted 2-D dwell-time histograms (A and B) and dependency difference plots (C and D) for scheme I at the indicated voltages. The predicted distributions were obtained by simulating and analyzing one million open and closed intervals from scheme I at each voltage using the parameters shown in the legend of Fig. 8.