Energies of differential rotation (black solid lines) and mean toroidal magnetic field (red dashed) as functions of time from Runs G1, G2, and G3 (panels a)–c)). Panel d) shows the azimuthally averaged azimuthal magnetic field at r = 0.98 R_⊙ from Run G2. The vertical dashed lines indicate the high and low states of differential rotation. Panels e) and f) show the time-averaged rotation profiles in Run G2 from the high and low states indicated as blue dotted and dashed lines in panel b).