Average sunspot properties. Azimuthal averages of the physical parameters, as inferred from the Stokes inversion, as a function of the normalized sunspot radius r/R_s at different optical-depth levels: log τ_c = 0 (red), −1 (orange), −2 (yellow), −3 (green), −4 (blue), −5 (cyan), −6 (purple). Typical deviations around the mean are represented by the vertical colour bars. All panels, except (h) and (i) were produced by averaging over 2π radians. Panels h (v_los in the center side penumbra) and i (v_los in the limb side penumbra) were obtained by averaging only over ±π/12 radians around the sunspot’s line of symmetry (see cone denoted by dashed lines in Figs. 2 and 3).