The curves for the estimation of the probability of SEP occurrence when both the SXR magnitude and the longitude of a solar flare are known. Each panel corresponds to integral energy (i.e., E > 10−; >30−; >60− and >100 MeV). Within each panel, two fits are presented, one per longitudinal bin – color-coded as: well connected (red) and poorly connected (blue) solar flares. See text for details. The gray border hatched rectangle area provides the limit for the F _SXR. This is similar to Figure 6.