Time-resolved spectroscopy of the burst from 2S 0918-549. The top panel shows the full bandpass lightcurve of the xenon layers, the second panel the bolometric flux (early values suffer from statistical errors between 10 and 20%), the third panel the blackbody temperature in terms of kT_eff, the fourth panel the blackbody radius for a distance of 5.4 kpc, and the bottom panel the reduced χ² for the fits per time bin.