Upper panel: non-axisymmetric radial magnetic field at arbitrary longitude (left) and azimuthally-averaged radial magnetic field (right) for model 1. Lower panel: non-axisymmetric and time-dependent radial magnetic field at arbitrary longitude and time (left) and azimuthally and time-averaged radial magnetic field (right) for model 7. The style of the contour plots is the same as in Fig. 4.