Figure 3. Relative frequency distributions of L _R in C-CO₂/C-Temp (black bars) and E-CO₂/C-Temp (white bars) (A) and in C-CO₂/E-Temp (dark grey bars) and E-CO₂/E-Temp (light grey bars) (B).

Positive and negative values indicate right and left turns, respectively. The extreme values of |100| indicate fish that turned in the same direction on all 10 trials.