Temperature on the plane perpendicular to the z axis at position z = 0. The temperature was measured for the case with thermal conduction. The colour scale is the same as in Fig. 5. The solid line in Fig. 3 shows the data along a cut through the centre of the plane along the x direction. As in Fig. 3, the temperature was multiplied by 10.0 to fit on the same scale as Fig. 5.