Magnetic field structure for the four models. Left: temporal and horizontal averages of the magnetic (solid lines) and dynamic equipartition (dashed lines) fields. Right: horizontal to vertical magnetic field ratio. Temporal averages of the dynamic equipartition and of the magnetic field strengths are evaluated during phases 1 and 3, respectively. The black dotted lines denote the geometrical height z = 0; to the left of the line is the convection zone, and to the right the photosphere.