Notes. Distant reflection is modelled using reflext, whose normalisation parameter is fixed to reproduce the observed narrow Fe Kα line (see Sect. 3.3). A Gaussian function is included in the model, for the narrow Fe Kβ emission line, with parameters fixed as in Table 2. For Mrk 509, the best-fit results including a broad Gaussian emission line are also shown. reflionx and power-law normalization parameters C are in units of keV^-1  cm^-2  s^-1 at 1 keV; ionisation parameter ξ is given in units of erg  cm  s^-1; the line normalization parameter C_broad is the integrated number of photons cm^-2  s^-1 in the line; σ is the line width expressed in keV. The R parameter is defined as the ratio of the flux of the unabsorbed reflected component to the total unabsorbed flux (evaluated between 0.3 and 12 keV). The two-phase warm absorber parameters are constrained within the range evaluated with the double Comptonisation model (Table 4). The last two columns give the ratio of the chi-squared value to the number of degrees of freedom and the associated probability.