(A) Difference in surface angular velocity between the equator and latitude 20° latitude for every Grand Maxima (Minima) in red and yellow (blue and black) measured in simulation, i.e., at extrema of the time series plotted on Figure 12A. The green asterisk indicates the simulation mean for this quantity. (B) Surface differential rotation against latitude for two grand maxima in red and two grand minima in blue, with the simulation mean again subtracted.