A set of poloidal flux functions ﹩{\Psi }(\xi ,\varsigma )﹩ for the equatorial region ion closed field lines is illustrated with contour values ﹩C=0.03,\;0.04,\;0.05﹩ with the same ordering. These field lines extend to an intermediate range of ξ to ensure ﹩{{B}_{z}}\lt 0﹩ as required by the space-charge density.