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Table 1.

Characteristics of the environment and of body temperatures of eight free-ranging springbok

Aug—Oct `Spring'Nov—Jan `Summer'Feb—Apr `Autumn'May—Jul `Winter'
Environment     
    Air temperature (°C) 15.8±3.7 20.2±2.2 17.6±2.8 10.0±2.1 
    Globe temperature (°C) 17.2±4.2 24.0±2.4 20.9±2.5 no data 
    Wind speed (m s-13.6±0.9 3.2±0.6 2.6±0.6 2.4±0.7 
    Rainfall (mm) 9±15 97±52 88±21 34±19 
    Time of sunrise (h) 06:11 05:24 06:15 06:55 
    Time of sunset (h) 18:08 18:58 18:29 17:36 
    Photoperiod (h) 11:57 13:34 12:14 10:41 
Body temperature (°C)     
    Mean 39.43±0.15 39.50±0.12 39.39±0.14 39.22±0.07 
    Minimum 38.85±0.21 38.97±0.12 38.87±0.11 38.61±0.10 
    Maximum 40.02±0.20 40.10±0.15 39.97±0.21 39.85±0.18 
    Amplitude 1.17±0.25 1.13±0.14 1.11±0.18 1.24±0.21 
    Time of minimum (h) 06:44±0:31 06:12±0:39 06:40±0:52 07:26±0:32 
    Time of maximum (h) 18:41±1:02 17:53±0:55 18:08±0:40 19:04±0:39 
Aug—Oct `Spring'Nov—Jan `Summer'Feb—Apr `Autumn'May—Jul `Winter'
Environment     
    Air temperature (°C) 15.8±3.7 20.2±2.2 17.6±2.8 10.0±2.1 
    Globe temperature (°C) 17.2±4.2 24.0±2.4 20.9±2.5 no data 
    Wind speed (m s-13.6±0.9 3.2±0.6 2.6±0.6 2.4±0.7 
    Rainfall (mm) 9±15 97±52 88±21 34±19 
    Time of sunrise (h) 06:11 05:24 06:15 06:55 
    Time of sunset (h) 18:08 18:58 18:29 17:36 
    Photoperiod (h) 11:57 13:34 12:14 10:41 
Body temperature (°C)     
    Mean 39.43±0.15 39.50±0.12 39.39±0.14 39.22±0.07 
    Minimum 38.85±0.21 38.97±0.12 38.87±0.11 38.61±0.10 
    Maximum 40.02±0.20 40.10±0.15 39.97±0.21 39.85±0.18 
    Amplitude 1.17±0.25 1.13±0.14 1.11±0.18 1.24±0.21 
    Time of minimum (h) 06:44±0:31 06:12±0:39 06:40±0:52 07:26±0:32 
    Time of maximum (h) 18:41±1:02 17:53±0:55 18:08±0:40 19:04±0:39 

For air temperature, globe temperature and wind speed, values are means± S.D. of 24 h averages. Rainfall is mean ± S.D. of monthly averages; time of sunrise, sunset and photoperiod are means of monthly averages. Body temperature indices were determined for each day, and then averaged over about 90 days for each animal; thereafter mean ± S.D. was calculated for the eight animals.

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