Detailed 1D profiles of ISM parameters through the center of the SWB. Panel (a): Total magnetic field B₀ (μG), showing slight compression at the shell but minimal interior perturbation. Panel (b): Number densities (cm⁻³) for electrons (n_e0; solid green), ions (n_i0; dotted blue), and positrons (n_p0; dashed red). Note the deep central cavity where ion density drops significantly. Panel (c): Electron temperature, T_e0 (K), exhibiting the characteristic “flat-top” plateau of the hot shocked wind (T ∼ 10⁶ K).