Example of the steps followed to find the best-fit baseline model on the Suzaku spectra (we use observation Suz 3 in this example). a) Fit to the spectrum with a single power law absorbed by neutral gas. b) The neutral absorber is partially covering the incident power law. c) As a result of characteristic residuals, we replace the solely neutral absorber by an ionized absorber; and d) two more warm absorbers leading to a stratified composite of differently ionized absorbers. e) The remaining residuals in the soft band and around 6.4 keV are flattened when finally adding a reflected power law in panel.