The night of February 5^th was the first time the Dave House South fell into the upper 50s since it began heating. That night was the coldest of the season and was preceded by a cold and mostly cloudy day. In fact, the day before that was also cloudy with only intermittent sun, despite warmer ambient temperatures. The Andy Shack dropped into the mid-40s that same night, but both buildings were still significantly warmer than the outdoors. The 6^th saw a return to sunnier, warmer weather and so both buildings began to recover right away from the low temperatures. Although the Dave House North was included on this graph, its heating system wasn’t completed until the afternoon before the probes were readout so not much happened to it on this graph. However, when it was filled, the hose water was roughly 55 ^oF and so the building got a slight boost in temperature from the added thermal mass and energy.