Leading dipolar eigenmode resulting from a mean-field calculation with a_rr = a_θθ = 0. Contour plots of all three components are presented, each normalised separately by their maximum absolute values. Maxima and minima are written next to each plot. The colour–coding ranges from  − 1, white, to  + 1, black, and contour lines correspond to  ± 0.1,  ± 0.3,  ± 0.5,  ± 0.7 and  ± 0.9.