Evolution of the timing parameters during the observation. The upper panel a) shows the PCA light curve of Fig. 2b for comparison; b) the averaged time lag in the 3 − 10 Hz band; c) coherence in the 3 − 10 Hz band; and d) Lorentzian peak frequencies. The following panels show the rms in both energy bands (circles for the 4.5 − 5.8 keV band and crosses for the 9.5 − 15 keV band) of the components: e) rms of L₁; f) of L₂; g) the power law; and h) the total rms.