Fig. 4

a Scatter plot of true positive rate against true negative rate (each point represents a bat flight and method combination) and (b) box plot of the balanced accuracy for each trip (N = 15). The scatter plot includes mean values of each method with standard error for true positive rate and true negative rate (a). A dashed line is included in both plots to show 50% balanced accuracy and values above the line represent good classification. Different letters above boxplots represent significant differences in paired Wilcoxon sign rank tests after Bonferroni correction (b)