Initial temperature distribution (top left) and logarithmic density distribution (bottom left). The black contour lines show the strength of the initial vertical magnetic field in steps of 0.25 mGauss, starting with 2 mGauss close to 20 AU. Initial resistivity profile with a dust-to-gas mass ratio of 10^-2 (top right) and 10^-4 (bottom right). Overplotted are contour lines of constant magnetic Reynolds number Re_m = c_sH/η with Re_m = 10³ and 10⁴.