The interpolating μ-functions of Eq. (3) (standard, dashed line) and Eq. (4) (simple, dotted line) are displayed as a function of x = g/a₀. An improved simple function (solid line) interpolating between simple and standard for x ≳ 10 is also presented to show that a transition behaviour governed by the simple μ-function in galaxies (where x < 10) can a priori be in accordance with the Solar System constraints (where x ≫ 10).