Energy dissipation as a function of radius for f_pp = 0.01, f_pp = 0.05, and f_pp = 0.1 (top to bottom). We show the radial Poynting flux integrated over a sphere of radius r (blue line), the luminosity in electrons (orange dashed line), in positrons (green dot-dashed line), and in protons (red dotted line), and the sum of all these components (black line), normalised by L₀. We caution that the vertical scales of the figures are different.