Horizontally and temporally averaged magnetic field components in the different runs as a function of height. Left: Vertical component, 〈|B_Z|〉. Middle: Horizontal component, $B_{\mathrm{H}}=\langle \sqrt{B_X^2+B_Y^2}\rangle$. Right: Ratio between the horizontal and the vertical components. Black lines are for Dyn model, red for the Bz50 model. and blue for the Bz200 model. The solid thick line is for 5 km resolution, the dashed medium-thick line is for 10 km resolution, and the dotted thin line is for 20 km resolution.