This graph shows that the new Double Play building using the Snap Cap roofing system maintains a slightly lower temperature range than the building using Sky Mats as radiators, even though the Andy shack has more radiator area per square foot of floor. The greater radiator area of the Andy shack allowed it to cool down to about the same temperature as the North building in the morning, but during the day, its temperature rose higher than the North building. This shows how a larger thermal mass helps a building stay cool without being affected as much by the heat of the day. Also, as the ambient temperature increased over the last few days, the temperature in the Andy shack climbed more than the temperature in the North building because of the greater thermal mass of the North building.