Evolution of the amplitude of the patchy power spectrum at ℓ = 3000, 𝒟₃₀₀₀ with the reionisation duration (upper panel) and the reionisation midpoint z_re (lower panel), for different values of our parameters. Error bars correspond to the dispersion of kSZ amplitude at ℓ = 3000 (68% confidence level) propagated from errors on the fit parameters. The diamond data point corresponds to a seventh simulation, with reionisation happening earlier. In both panels, results are compared to those of Battaglia et al. (2013), rescaled to our cosmology.