failed to reach significanceP = 0.10
In contrast, at the wall, the distribution of bearings was bimodally distributed, with the d-axis included in the 95% confidence interval (Figure 3c , Table 1 ), and failed to reach significance for a unimodal orientation (unimodal direction: 305°; r = 0.28; Rayleigh-test for unimodal distribution: P = 0.10, n = 29).