Fig. 5

“%OA” vs. “%AA”, obtained with a narrowing of the distribution of R. Real values were replaced by 163 RANDOM numbers, generated in the physiological distributions for AA (0.25–0.39) and OA (1–7), but the distribution of R was changed to 8–10 (instead of 4–10), see Methods (r = − 0.669, p < 0.001)