Fig. 3. (A) Circadian rhythms over 3 days for one animal (22–24 July 2005) shown by cosinor analysis (Nelson et al., 1979), which fits a `best fit' cosine wave to the actual data if such a wave form exists. Raw data are represented by the blue line and the best-fit curve is in pink. (B) Changes in T_globe over the same 3 days. Note that the time of maximum T_globe occurs about 7 h before the time of maximum T_carotid. In both A and B, actual data points (diamonds) and their corresponding calculated points (squares) are shown.