PIB-subtracted SB profiles in the 0.3–2.0 keV band (top plots) and the significance values with respect to CXB for r > R₂₀₀ data points (bottom plots). The overall significance, S/N_all, of the excess emission in this regime is listed in the legends. (a): Profiles from A3391-N, NC, and the Northern Filament in blue; A3391-E and Eastern Filament in red; and west and east of A3391 in green and orange (see Fig. 3, left). (b): Profiles from Sectors 1–5 of A3395S. Sectors 1 (blue) and 2 (red) are related to the Southern Filament (see Fig. 3, right). The CXB level and its 1σ range are plotted as the magenta horizontal dashed-lines and magenta shaded area. The R₅₀₀ (R₂₀₀) of each cluster is plotted as vertical solid (dashed) lines.