Influence of the key time on the analysis. Dashed lines are average flare time series using the GOES 0.1–0.8 nm flux peak time, thick lines are average flare time series using the peak time of the derivative of the GOES 0.1–0.8 nm flux. Black is for TSI, red for 862 nm, blue for 402 nm, and green for 500 nm. The average is made over the 150 largest flares in our sample, from X28 to M5.