Probability distribution function of the dissipation rate required to reproduce the column density of carbon at high pressure along the N lines of sight of JT11, assuming that all the shocks intercepted by these lines of sight are identical and defined by the parameters of the standard model: $n_{\mathrm{H}}^0=1{\mathrm{c}\mathrm{m}}^{-3}$, B₀ = 1 μG, and V_S = 80 km s⁻¹. The probability distribution function is normalised so that its integral is equal to one.