Fig. 6. Estimated correlations between individual mean speeds at 20°C and 35°C (filled circles) and individual maximum speeds at 20°C and 35°C (open circles) in the lizard Sceloporus occidentalis, as a function of the number of trials sampled per individual. Points show the mean correlation of 1000 independently drawn samples from the empirical distribution of speeds. Upper error bars indicate the 75th percentile of the distribution of correlations between means, and lower error bars indicate the 25th percentile of the distribution of correlations between maxima. The corresponding error bars are nearly symmetrical but are omitted for clarity.