Influence of modern ordinary strong SEP spectra on the Venusian ion-pair production rate values. Shown is the sum of the GCR- induced background ionization (taking into account protons up to 10 TeV) during solar maximum conditions and the SEP-induced production rates (colored lines). Of particular interest in this study are the four labeled events: GLE05 (green line), GLE10 (orange solid line), GLE11 (orange dashed line), and GLE62 (purple line).