Coloured table of the median value of the dissipation rate (see Fig. 11) as a function of the shock velocity and the strength of the magnetic field for $n_{\mathrm{H}}^0=1{\mathrm{c}\mathrm{m}}^{-3}$. All the other parameters are set to their standard values (see Table 2). Models with a median dissipation rate within a factor of two of that obtained with the standard model are shown in turquoise. Models with a median dissipation rate between two and four times larger (resp. lower) than that obtained with the standard model are shown in green (resp. blue). All other models are shown in red.