Average flare light curves for TSI (black), and the three visible SPM channels (blue, green, and red). Upper left panel: average over 43 flares from X17.2 to X1.3. Upper right panel: average over 68 flares from X1.3 to M6.4. Lower left panel: average over 140 flares from M6.4 to M2.8. Lower right panel: average over 1850 flares from M2.8 to C4. Horizontal lines show the  ± 2σ limits computed from –90 to 150 min excluding 60 min centred around the peak time.