Comparison of the effect of considered attenuation processes on the WD flux (Sect. 3.2) at shortest (top) and longest (bottom) wavelength of the set. Corresponding column densities of H⁰ in neutral region and H⁺ in ionized region are given by the column density model in Fig. 5 and of H⁻ in neutral region and H⁰ in ionized region by the LC modeling (Sect. 4). Two minima of radiation out of the eclipse for attenuation processes in ionized region (dashed lines) correspond to the orbital phase with line of sight entering/exiting the neutral region.