Differencial surface density profile model as a function of radius. Upper panel: model of the projected excess of surface mass density as a function of the comoving radial distance from the centre for a cluster with M₂₀₀ = 10¹⁴ M_⊙ h⁻¹, c₂₀₀ = 3 at redshift z = 0.3, with σ_off = 0.3 and f_off = 0.3. The radius enclosing 200 times the critical density corresponds to R₂₀₀ = 1.47 Mpc h⁻¹. The four one-halo and two-halo terms are shown with different colours and styles, as labelled. Second panel: relative differences, with respect to the reference, of the models with r_t = 1, 2, and 4. Third panel: relative differences, with respect to the reference, of the models with the linear power spectrum estimated assuming different cosmological model parameters, as labelled. Shown for comparison (yellow dotted curve) is the relative difference between the prediction adopting WMAP9 cosmology and WMAP9, but fixing Ω_M = 0.3 and h = 0.7. Bottom panel: relative differences, with respect to the reference, of two models constructed with either the Sheth & Tormen (1999) or the Sheth et al. (2001) biasing model.