Surface flow velocities (cyan arrows) and vertical magnetic field averaged over time from t = 4.25 h to t = 5.44 h for the non-rotational (0  Ω_⊙) hydrodynamic simulation (top) and the rotational (110  Ω_⊙) hydrodynamic simulation (bottom). The velocity has also been spatially smoothed for clarity by a Gaussian with standard deviation of 2.4 Mm. Note that this has been computed at a constant geometrical height, at z = 480 pixels = 15.360 Mm from the bottom of the box.