It looks like this...
Each day we marked on the paper of the composition notebook, where the point of the straw touched the paper. Then, looked at the Weather Channel application for the Iphone 4S to see what the barometric pressure was at that time and recorded it at the spot marked from the barometer. We repeated this process each day and were able to compare it to the days before. It was recorded around the same time of day each day.
It was interesting to see the movement of the barometer, even if it was a small difference.
The unit used to measure the atmospheric pressure is inches of Mercury, as measured by the Weather Channel.
Here are the pictures and data collected from the barometer readings.
Monday, October 15, 2012: The barometer was measured at 3:44 pm and the pressure was recorded as 29.87 inches of Mercury.
Tuesday, October 16, 2012: The barometer was measured at 3:25 pm and the pressure was recorded as 29.92 inches of Mercury.
Wednesday, October 17, 2012: The barometer was measured at 3:50 pm and the pressure was recorded as 29.87 inches of Mercury (the same as Monday).
Thursday, October 18, 2012: The barometer was measured at 3:49 pm and the pressure was recorded as 29.79 inches of Mercury.
Friday, October 19, 2012: The barometer was measured at 2:50 pm and the pressure was recorded as 29.83 inches of Mercury.
Here is the notebook, so you can see the marked points better.
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