Radius of the truncated clouds with respect to the statistical radius of the voids, as a function of the Voronoi overlap rate threshold. The small panels illustrate the cloud at different truncation levels: when no threshold is applied, the outskirts are larger than the effective volume represented with the wire-frame sphere; a minimum overlap rate of 0.37 preserves the statistical volume, while larger thresholds yield the very interior of the voids. We illustrate the ∼80% selection, corresponding to r_Voro > 0.72, but deeper cuts can be applied if one wishes to probe the most underdense regions.