Spectral energy distributions of events D, B, and E. The derived data points for the time-integrated spectra of D, B, and E along with the best-fit power-law models (with 1σ uncertainties) are shown using the blue, orange, and green symbols and shaded regions, respectively. The dashed orange and green lines represent average cutoff power-law models for the time-integrated spectra of events B and E. Upper limits between 100 MeV and 1 GeV (3σ) are shown as inverted triangles. The combined D and B spectrum above 200 keV along with its best-fit model (1σ) are shown using red triangles and a red shaded region. The corresponding spectral slopes (2 − α) are also indicated.