(Color online) Comparison of mean and 95% CI of angular errors between sessions and experiments. Current present the results of group G-anech in this experiment. Parseihian presents the results of group G3 in exp-Parseihian. Colored lines and bands correspond to the value and 95% CI of an ax + b linear regression. p-values are reported when pair-wise comparisons between contiguous distributions proved significant. Right hand column of each subfigure report the R² goodness of fit and the regression coefficients values and 95% CI. The error bars associated to each experiment session respectively represent the 720, and 625 pts of 12 and 5 participants.