a) Dependence of the true impact parameter, y/b, b) the fitted Lundquist field strength on the axis, B₀, c) the normalized deviation, dev/ ⟨B⟩, and d) the mean field magnitude ⟨ B⟩ normalized to B₀ in function of the impact parameter, p, found by fitting the Lundquist field to the models. The parameter n describes the profile of the axial component of the magnetic field and electric current, see Eqs. (4), (5).