Evolution of the temperature at different depths for six chosen locations, over two rotations at a heliocentric distance of 3.4 au. The first line shows locations in the northern hemisphere, the second line shows the locations of the equator, and the third line the locations in the southern hemisphere. Layer 0 represents the surface, layer 1 is at a depth of 1 cm, layer 5 is at 5 cm, layer 10 is at 10 cm, and layer 20 is at 20 cm.