(a) Probability of exceeding a cumulative fluence for the 200–300 MeV energy channel, calculated with one-component version of both models for two different missions. Model 1 is shown in blue and model 2 in red. 2-year mission is marked with dashed lines and 6-year mission with solid lines. (b) Probability of exceeding a worst-case fluence for the 200–300 MeV energy channel, with similar formatting as in (a).