Posterior distributions for A_low (which phenomenologically parametrizes the low-ℓ deficit by multiplying the amplitude of the power spectrum at multipoles smaller than ℓ < 30) and for A_L (which parametrizes the peak smoothing effect), derived from MCMC chains. We show the results for a ΛCDM+ A_low + A_L model (black solid line), for ΛCDM+ A_low (blue) and for ΛCDM+ A_L (red). Although a degeneracy is present between the two parameters, small deviations with respect to the ΛCDM expectations remain even when varying both parameters at the same time.