Cumulative distribution of the occurence of p-values corresponding to the χ² value of the null hypothesis for the systematic shear correlation functions, determined using a large set of randomised catalogues. The different panels correspond, from left to right and top to bottom, to the increasing number of radial bins included in the fit (indicated in each panel). The black line shows the p-values of , the red line the p-values of . The blue dotted line shows the one-to-one correspondence; any departure from this line shows that the p-values from the χ² of the null hypothesis do not correspond to the actual probability of being zero. The orange dashed lines show how we convert the observed p-value in our data to the actual probability that is consistent with zero.