Warm corona photon index Γ_wc (top) and temperature kT_wc (bottom) of the warm corona model for the different objects in our sample. The black solid histograms correspond to the whole observations. The dashed (blue) histogram corresponds to the average values of Γ_wc and kT_wc for each object. In the top figure, we have also overplotted the histogram of the hot corona photon index Γ_hc (dot-dashed red line).