Thermal properties of the absorbing gas at z = 0.09017 assuming CIE. Left: temperature dependence of the two-phase absorption model fit statistics to the X-ray data (black solid curve) when N_OVI is fixed to the FUV measured value. The shaded areas mark the forbidden regions based on the FUV measurements (the lower limit is yielded by the limits on N_CIII and N_OVI, whereas the upper limit is set by the O VI line broadening). The 1T curve shows the X-ray model fit statistics without the hot absorption component included, and is plotted for reference. Right: O VI (red), O VII (black) and O VIII (blue) ion fractions over the T -ranges of the warm and hot CIE components. The dotted lines mark the best-fit temperatures for both phases, while the white regions mark the 1σ uncertainty limits as yielded by X-ray data. The light gray shaded regions show the improvement which X-ray data provides to the T_warm determination as compared to the limits obtained with FUV data.