Separate CDFs of the surface brightness of the 4−6 keV continuum, Fe XXV and cold Fe (from left to right) in the northern (N, blue circles) and southern (S, red triangles) parts with respect to the starburst disc plane. These plots were made, using 29 segments with the 4−6 keV surface brightness cut (see text). The 4−6 keV continuum surface brightness is in units of 10⁻¹⁵ erg s⁻¹ cm⁻² arcsec⁻² while the Fe line surface brightness is in units of 10⁻⁸ ph s⁻¹ cm⁻² arcsec⁻².