Konus-Wind spectra accumulated over three time intervals during the main rise phase: 11:01:49–11:02:16 (left), 11:02:16–11:02:32 (middle), 11:02:40–11:02:48 (right). Black crosses represent the photon spectrum, color curves indicate model components: PL (blue), CPL (cian), nuclear deexcitation lines (magenta), neutron capture line (green), electron-positron annihilation line (dashed green), and the sum of all components (red). The bottom panels on each plot represent the fit residuals.