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Fig. 2. Random nest distribution of mole-rats under corneal anaesthesia. Triangles
indicate mean nesting directions of the repeatedly tested six pairs in control
(A) and under anaesthesia (B), and nesting directions of the singular tested
group in control (C; N=42) and treatments (D; N=40). The
arrows, proportional to the outside radius (=1), mark the grand mean vector
based on the pairs' mean directions (A,B) or the mean vector of all single
decisions (C,D). The inner circles mark the Rayleigh significance thresholds:
5% (broken) and 1% (solid) in A, B; 1% (broken) and 0.1% (solid) in C, D.
Table 1 gives numerical
values.