Snapshots of the magnetic field fluctuations and axisymmetric field for the unstratified run TU0. The three leftmost, middle, and rightmost panels show the linear stage of the instability, the end of the linear stage, and the nonlinear stage, respectively. (a–c) Hammer projections of the nonaxisymmetric latitudinal field ${\stackrel{\sim }{B}}_{\theta }\prime$ at radius r/r_out = 0.7. (d,f,h) Meridional slices of ${\stackrel{\sim }{B}}_{\theta }\prime$ at longitude ϕ = 90°. (e,g,i) Color isocontours depict the axisymmetric azimuthal field, $⟨{\stackrel{\sim }{B}}_{\varphi }⟩$, with overlaid black contour lines indicating the axisymmetric poloidal field.