Computed SED averaged over the three observation periods during the first outburst (phases 0.62, 0.66 and 0.70), with synchrotron (dot-dashed), IC (solid) and non-absorbed IC (dashed) components. The calculations were performed with i = 45° and B = 0.22 G. The crosses show the XMM–Newton EPIC-pn spectrum averaged over three observations and deabsorbed taking N_H = 5 × 10²¹   cm^-2. To compare the measured flux to the excess computed X-ray flux, we subtracted a pedestal power law spectrum corresponding to a 0.3 − 10 keV flux of 11.5 × 10^-12ergcm^-2s^-1. The MAGIC simultaneous spectrum is shown as a red bow-tie.