Exit latitudes and energies for 1 × 10⁴ pseudo-particles in the case of 500 MeV protons shown in the left hand column. Top, middle, and bottom panels: show these positions and energies in the case of zero-drift, A >  0, and A <  0, respectively. Diffusion is set to κ_||,0 = 5. Top, middle, and bottom panels: in the right hand column show the high-activity regions, as defined in the text, for the zero-drift situation, A >  0, and A <  0 polarity cycles, respectively. The colour scale ascends from blue to red.