Relaxation rate, ∂F/∂t, in (J_r, cos I) for various anisotropies q (left to right) and rotation α (from top to bottom), as measured in N-body simulations. The amplitudes and structures observed depend on anisotropy, and show a reshuffling towards isotropisation. Orientations redistribute toward a more affine distribution in cos I. As a result of using binning in action space and finite difference in time to compute ∂F/∂t, the expected initially sharp relaxation occurring at cos I​ = ​0 has been smoothed and is not visible.