HODs measured for galaxies with M_r − 5 log₁₀(h) ≤ − 17 in MDPL2-SAG (left) and TNG300 (right) catalogues. Upper panels: resulting HOD for the complete catalogues (black squares – solid lines) and for haloes inside cosmic voids (red triangles – dashed lines) identified with different values of Δ_lim, as indicated in the key. Bottom panels: ratio between HOD inside voids and the HOD in the complete catalogues. The error bars are computed using the standard jackknife procedure.