From: Dogs are sensitive to small variations of the Earth’s magnetic field
Pooled raw data | Means per dog (n ≥ 5) | |||||
---|---|---|---|---|---|---|
Declination rate | 0% | 0.1-2% | >2% | 0% | 0.1-2% | >2% |
Number of observations | 491 | 256 | 655 | 22 | 15 | 22 |
Mean vector (μ) | 293° | 12° | 84° | 291° | 355° | 195° |
Length of mean vector (r) | 0.129 | 0.08 | 0.006 | 0.367 | 0.349 | 0.07° |
Circular standard deviation | 116° | 129° | 182° | 81° | 83° | 132° |
95% Conf. interval (-/+) for μ | 265°-321° | 310°-74° | - | 246°-335° | 290°-61° | 315°-76° |
99% Conf. interval (-/+) for μ | 256°-329° | 290°-94° | - | 232°-349° | 270°-81° | 239°-151° |
Rayleigh test (Z) | 8.17 | 1.619 | 0.028 | 2.959 | 1.828 | 0.109 |
Rayleigh test (p) | 2.83⋅10-4 | 0.198 | 0.973 | 0.05 | 0.162 | 0.899 |
Rao’s spacing test (U) | 260.285 | 281.656 | 283.053 | 148.258 | 147.139 | 127.188 |
Rao’s spacing test (p) | <0.01 | <0.01 | <0.01 | >0.1 | >0.1 | >0.5 |