Complementary cumulative distribution functions (CCDFs) of years with the value of the annual fluence exceeding the given value F for four energy values discussed here, F₃₀, F₆₀, F₁₀₀, and F₂₀₀, as shown in panels a through d, respectively. The dots correspond to the F values from Table D.1, and the probability P and its 68% confidence-level uncertainty are calculated for the Poisson distribution. The red dashed lines with red shading depict the best-fit Weibull distributions and their 68% confidence-level uncertainties, respectively. The incuts depict the ln(− In (P))-vs.-ln(F) dependence, which should be linear for the Weibull distribution (see text).