Daily integrations show strong spectral changes during the observation.
Our main result is that we find the X-ray spectral index to be correlated with the UV flux. These correlations point towards a model in which the X-rays originate via thermal Comptonization of UV seed photons. Neither the power law photon index nor the Compton reflection component are correlated with the 2-10 keV flux. The latter is not correlated with the iron K-alpha line flux either. We do find an apparent correlation between the X-ray spectral index and the strength of the Compton reflection component.