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On a certain thermometer during a 5-day period high temperatures were -10 degree F, -1 degree F, -0 degree F, 19 degree F, and 12 degree F.
On a certain thermometer during a 5-day period high temperatures were -10 degree F, -1 degree F, -0 degree F, 19 degree F, and 12 degree F. What was the average (arithmetic mean) of the daily high temperatures for the 5-day period?