Performance (i.e. percentage of successful trials) of the best 10 robots evolved in the (S), (C) and (CR) experimental conditions in 10 corresponding replications of each experiment.

<p>Boxes represent the inter-quartile range of the data and horizontal lines inside the boxes mark the median values. The whiskers extend to the most extreme data points within 1.5 times the inter-quartile range from the box. Circles indicate the outliers.