Two-hour time-interval proton spectra for the August 30, 2022 (left) and the September, 5 2022 (right) events as observed by SolO/SIS from 0.267 MeV/n to 8.303 MeV/n. The times tamps represent the start of the intervals, ranging from 8 h before to 8 h after the arrival of the shock. The black curve with squares corresponds to the time of shock arrival. The triangles and stars represent observations upstream and downstream of the shock. The dashed black line is present to guide the eye. The power law index is E⁻² for the August event and is E⁻¹ for the September event. Upstream of the September 5 event, the crossover is clearly visible.