Fig. 4. A graph showing the output from the mixed model statistics of mean take-off and landing forces at each horizontal range. The error bars represent the 95% confidence intervals. By ignoring the few jumps at 2 m, when the squirrel consistently landed at the more rigid base of the pole, the square of the Pearson product moment correlation coefficient (the r² value) improves from 0.61 to 0.99.