Measurements by the STEP magnet channel around the interplanetary shock on 2021 November 3. Panels 1–15 show the counts of ions vs. time in 32 energy channels and one-second resolution measured by the 3 × 5 pixel array in the nominal FOV, while panel 0 shows the counts of penetrating particles measured by the background pixel. The energies are measured in the spacecraft frame. The red triangle marks the shock arrival at ∼14:04:26.