Short segments 200 s long of the count rates of the light curves for the multi-temperature disk (black) and the corona (red) emission components in the three energy ranges [1.7–3.4] (top), [3.4–6.8] (centre), and [6.9–10.2] keV (bottom) for the three series A8b (left panel), E5 (central panel), F7 (right panel). Rates relative to the corona were multiplied by 8 in the energy range [1.7–3.4] keV and by 2 in the other ranges to superimpose the light curves on the disk ones.