Temporal evolution of precipitating electron counts at different energies under four turbulent scattering regimes: (a)–(b) no scattering (﹩{D}_{\mu \mu 0}^{t}=0﹩ s⁻¹), (c)–(d) weak scattering (﹩{D}_{\mu \mu 0}^{t}=0.01﹩ s⁻¹), (e)–(f) moderate scattering (﹩{D}_{\mu \mu 0}^{t}=0.5﹩ s⁻¹), and (g)–(h) strong scattering (﹩{D}_{\mu \mu 0}^{t}=5﹩ s⁻¹). Left and right columns are for the positive and negative polarities, respectively.