always lower in maximum power.

We calculated the fractional rms amplitude and centroid frequency of the 1 Hz QPO and the X-ray flux for the 2000, 2002 and 2005 outbursts. The fractional rms amplitude as observed in 2002 and 2005 is shown in Fig. \[jumps\] (middle panel). The fractional rms amplitude shows abrupt changes over time and does not follow a clear correlation with flux. In the 2000 re-flaring state, the 1 Hz modulation was detected in 13 observations out of 46, close to the peaks of the re-flares.

We plotted together all the points for the three outbursts in Fig. \[rms-flux-freq\]. There is a clear increase of the frequency with flux and and an anti-correlation between frequency and QPO fractional rms amplitude. Both relations have considerable scatter. We performed a rank correlation test on the 1 Hz QPO frequency vs. fractional rms anticorrelation and we found a Spearman coefficient of $\rho=-0.38$ with a probability of 0.1% of the null hypothesis (no correlation in the data) being true. A similar test for the frequency vs. flux correlation gives $\rho=0.75$ with a probability of less than 0.01% for the null hypothesis.

We explored the fractional rms dependence of the 1 Hz 