Background fits to the four source regions 1, 2, 3, and 4 in panels (a), (b), (c), and (d), respectively. The data are given in blue. Upper panels: The main model components are shown using different colors and line styles: The LHB is red and dashed, the CGM is orange and dashed-dotted, the corona is yellow and solid, the CXB is light blue and dashed, and the GX 340+0 halo components are purple and dotted. Lower panels: Normalized residuals of the fits.