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Table 1 Mean directions of toads in the natural and the reversed magnetic field

From: Magnetic orientation of the Common Toad: establishing an arena approach for adult anurans

  Natural magnetic field Reversed magnetic field Comparison
  Direction r P Direction r P t P
Initial orientation 355° 0.20 0.33 15°/195° 0.18 0.41 -0.24 0.40
At the inner circle 25° 0.19 0.34 10°/190° 0.23 0.23 -0.78 0.21
At the wall 35° 0.34 0.03 15°/195° 0.35 0.03 -1.78 0.04
  1. Mean directions of toads (n = 29 in all cases) were tested for significance using the Rayleigh-test; r represents the mean vector length; the absolute deviations from the mean vector under the natural field were compared between the distributions in the natural and in the reversed field using the t-test.