Top left: absolute value of the vertical magnetic field for the BATT, AMBI, and AMBIHALL models, averaged over the horizontal distance, as a function of time and height. The values for each model and each time are normalized to the time and horizontal average of ⟨|B_z|⟩_xyt from the BATT model for a better visualization. Top right: time and horizontal average of the absolute value of the vertical magnetic field for the three models. Middle panels: same for the horizontal magnetic field B_H. Bottom panels: same for the ratio of the horizontal to vertical magnetic field components.