Overview of the SEP event showing proton intensities at 0.5 and 10 MeV (top panel, blue and black traces, respectively), electron rates at 150 keV and 1 MeV (second panel, blue and black traces respectively), and the radio and magnetic field data (bottom three panels). The time of the shock passages are marked by the solid vertical lines and the periods of the magnetic clouds are bounded by the pairs of dashed vertical lines.