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. 2008 Aug 25;105(36):13451–13455. doi: 10.1073/pnas.0803650105

Table 3.

Basic circular statistics for axial directions of deer from the Czech Republic

Deer position Mean vector
Circular SD Rayleigh Test Z Rayleigh Test p No. of herds No. of deer
μ r
Red deer
    All localities 10.2°/190.2°(4.4–16.0) 0.88 14.3° 31.17 < 0.0001 40 1,062
    Beds 10.5°/190.5° 0.90 13.0° 19.52 < 0.0001 24 917
    Grazing 9.7°/189.7° 0.86 16.0° 11.68 < 0.0001 16 145
Roe deer
    All localities 9.1°/189.1°(5.8–12.3) 0.83 17.4° 139.07 < 0.0001 201 1,912
    Beds 7.6°/187.6° 0.86 15.9° 15.44 < 0.0001 21 430
    Grazing 9.0°/189.0° 0.81 18.6° 99.75 < 0.0001 152 1,080
    Resting 10.7°/190.7° 0.93 10.7° 24.35 < 0.0001 28 402

Body positions were estimated for grazing and resting red and roe deer (direct observations) or from snow tracks of resting animals (beds). The mean vector is characterized by its angle (μ) and its length (r). Values in parentheses below the mean vectors represent the 99% confidence intervals (with reference to north only).