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Table 1 Results of Rayleigh's Z test for circadian activity of Parastacus brasiliensis under laboratory conditions

From: Assessing the importance of burrows through behavioral observations of Parastacus brasiliensis, a Neotropical burrowing crayfish (Crustacea), in laboratory conditions

Crayfish Carapace length (mm) Mean vector (μ) Length of mean vector (r) Z value p value
Indiv 1 18.37 19:55 0.390 633.977 <0.0001a
Indiv 2 23.55 19:39 0.381 173.409 <0.0001a
Indiv 3 24.02 22:56 0.227 296.091 <0.0001a
Indiv 4 20.99 22:10 0.441 240.094 <0.0001a
Indiv 5 21.94 18:51 0.171 9.994 <0.0001a
Indiv 6 26.84 21:02 0.461 527.031 <0.0001a
Indiv 7 25.7 20:18 0.172 186.459 <0.0001a
  1. Indiv, individual. aSignificant p values.