2009-10-27: The outdoor temperature went down to about 2.3°C last night, and the furnace came on (turned on by the programmable thermostat, I wasn't awake at 06:00!!) for 12 minutes to warm up the house. The gap around midnight was while I was reformatting some data from previous data collections. Data points here are collected every 30 seconds; the Lab Pro is totally adjustable from thousands of times per second to one every few hours.

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