Behavior of the normalized energy fluxes F/F_tot against the total pressure normalized to the pressure at the optical surface log p_tot/p_surf as a function of variations in the individual stellar parameters (T_eff, log g, and [Fe/H], from top to bottom, respectively). In each panel, the various curves are shown varying one of the parameters while keeping the other two fixed. The individual normalized components of F_tot are F_enth (dashed), F_kin (dotted), F_ion (dash-triple-dotted), F_th (long dashed) and F_rad (solid). Averages are evaluated at constant geometrical height.