Here, the importance of a low sol-air temperature is again seen. Although the minimum sol-air temperature is similar for all four nights, the last two nights have lower sol-air temperatures in the early night and are able to cool for longer. Conversely, the temperature gradually climbs on the 4^th and the 5^th (despite the near identical ambient temperatures) since the sol-air temperature didn’t drop until the late night, early morning. Also note how the longer time constant of the Snap Cap Double Play building keeps the inside temperature down during the day.