The weather was mostly cloudy for these days, so the buildings weren’t able to pick up much heat. Without sun, the Dave House South and the Andy Shack behave similarly although the Andy Shack is slightly warmer. At this point, it became an issue how to meaningfully measure the sol-air temperature. While cooling, a white plate, pointed up at the sky was used to represent the cooling potential available. Now that the buildings are heating, that same set-up no longer represents the heating potential available. So a black, tilted plate was used instead. The biggest difference occurs during the day, when the more direct incidence and more absorptive color of the black plate allows it to get much hotter than the white, flat plate. The white plate also cools off more at night since it has a more direct incidence with the night sky, although this effect is small.