Extra probes were placed on intermediate tanks in addition to the tanks already monitored. The tanks are all fairly close in temperature and the differences are mostly as expected. At the top, the coldest tank is the one farthest away from the absorbers and the hottest is the one in the middle of the system. All of the rest of the tanks are somewhere in between these two extremes, both in terms of position and temperature. The bottom temperatures are closely grouped, as expected. However, I am not sure what is going on with the two coldest tanks. During the night, the tank furthest from the absorbers is the coldest but during the day, the tank in the middle of the system is coldest at the bottom.