Cumulative probability density histograms showing the fraction of ensemble members still running at normal cycle amplitude after N cycles. These are constructed from 100-members ensembles of simulations with inflows amplitude v ₀₀ = 0, −500 and −750 cm s⁻¹ (blue, orange and yellow as labeled). All simulations in each ensemble use a dynamo number K = 1.0 and full stochasticity in the properties of emerging BMRs.