Monday, April 23, 2007

Weather plays tricks on my garmin


if you look at the elevation chart it shows a declining elevation. The funny thing is though that I was doing laps at the same spot which is roughly at sea level -- sometimes below if the tide and winds are right. The garmin uses a barometric altimeter which uses air pressure to calculate altitude --- there must have been a front or something moving thought when I did this ride because it thinks I was going downhill. funny.

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