Distribution of current parameter α along the stellar surface as seen from above the polar cap for the solution of Fig. 2. In the green closed line region outside the polar caps, α = 0. The azithmuthal angle ϕ = 0 lies along the corotating xz plane of Fig. 2 in the direction of inclination of the magnetic axis. The blue region shows the main magnetospheric current. The yellow-red region indicates part of the return current, with the main part of the return currently lying along the separatrix (thick dotted black line).