Radius r_maxratio where the first maximum of the ratio occurs for boundary conditions where this maximum deviates from MOND by a fraction δ. These boundary conditions are the optimal boundary conditions given a maximum allowed deviation δ of from MOND. This is for f_G/m² = 0.99 Mpc². We show the result for both analytical (solid lines) and analytical (dotted lines) solutions and for various baryonic masses M_b. Results for the analytical approximation are shown only where our estimate Eq. (J.36) says that the approximation is better than q = 10%.