Multipolar moment spectra of clusters for the mass bin M₃ and the noise contribution at two scales in the annuli ΔR₁ (top panel) and ΔR₄ (bottom panel) and for two redshift values z = 0.3 and 0.6, respectively, from left to right. The left-hand panels show the different sources of noise as described in Sect. 4. On the right-hand panels, the total noise profile σ_mm is shown once divided by in order to mimic the shot noise obtained by stacking the spectra of N_clusters clusters.