Top: photometry values of the stacked and rescaled voids from the Sutter et al. catalogue, at an aperture of 0.54 times their effective radii, as a function of the number of voids (sorted by decreasing size). Significance contours are computed using random stacks produced from the WMAP V band cleaned map. Legend is identical to previous plots of photometry profiles (see Fig. 7). Bottom: for the stacking performed in the WMAP V map, S/N of the above photometry values computed using the significance contours.