Same as Fig. 10 but for a pre-shock density varying between 0.1 and 2 cm⁻³ (from left to right), a strength of pre-shock magnetic field varying between 0.1 and 10 μG (from top to bottom), and six values of shock velocity: 20 (red), 40 (orange), 60 (green), 80 (turquoise), 100 (light blue), and 120 (dark blue) km s⁻¹. For coherence, the colour code is the same than that used in Fig. 8. In many cases, only the last distribution (corresponding to V_S = 120 km s⁻¹) is visible, because those obtained at lower velocities are identical and hidden behind it. The bottom left panels are empty because the distributions fall outside the range of dissipation rates displayed.