Polar Electro AXN500 User Manual page 23

Graphical Barometer Trend
The graph shows how the sea level pressure has changed. Pressure readings vary locally and seasonally and also according
to the altitude. Check you local average pressures and learn to interpret the trend according to your local readings.
Sea level pressure:
The entire axis equals 15 hPa or 0.75 inHg.
One white pixel equals 1 hPa or 0.05 inHg.
• If the trend rises, the weather is likely to improve.
• If the trend drops, the weather is likely to get worse. The longer or more rapidly the trend drops, the greater the chance of
a storm.
Example: You switched the barometer on when camping for the night. In the morning, you can interpret from the trend how
the weather is likely to develop.
1.
Time: last 11 hours and 45 minutes
2.
1. In example one, the pressure has dropped. The Pressure Drop
2. In example two, the pressure has remained quite stabile.
Alarm symbol indicates a possible change in weather
conditions.
THE MAIN FUNCTIONS OF THE POLAR OUTDOOR COMPUTER
The most recently
updated point.
The trend is updated
every 15 minutes.
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