Fig. 3. Accuracy of the path integrator. (A) Distances between the end of the home run and the correct position of the nest for ants captured at the feeder (5-m ants: median=1.27 m, N=51; 10-m ants: median=2.45 m, N=53; 20-m ants: median=2.47 m, N=50). Boxplots give the median, 25% and 75% quartiles, whiskers and outliers (+). (B) Distances between the center of the systematic search and the correct position of the nest for ants captured at the feeder (5-m ants: median=2.00 m, N=49, 10-m ants: median=3.04 m, N=41, 20-m ants: median=4.30 m, N=49). The values for the Kruskal-Wallis (KW) one-way ANOVA are given at the top, the P values of pairwise comparison are given underneath. P values that show significant differences at a level of at least 5% are printed in bold types.