Time evolution of the integral radial scales Λ (Eq. (52)) in three regions I (r ≤ R_domain/10), II (R_domain/10 < r ≤ R_domain/2), and III (r > R_domain/2) for simulation runs A (full lines), B (dashed lines), and C (dotted lines). The discontinuity of Λ_III for run A is a result of not changing sign on the same radial scales for all φ, that is R_θθ(r′,t) does not cross zero during a few orbital periods.