Figure 2

Statistics applied to PCA results. This figure is the same principal component analysis as figure 1, on which the boundaries deduced from the convergent results of the two-sample T-test and the Wilcoxson rank-sum test have been mapped. A thick red line corresponds to the rejection of the null hypothesis that members on opposite side could come from a same group. Identically shaded areas represent regions where the difference of coordinates would not be considered as significant.