Magnetic field lines 10000 km behind the Moon for an IMF along the y-axis (same as in Fig. 3(1)). (a) seen along the +x-axis, and (b) along the −z-axis. The color scale shows the magnitude of the magnetic field similarly to Fig. 3. To enhance the bending of the field the magnetic field x-component was multiplied by 4, and the z-component by 2, before drawing the field lines.