3. On the Station settings page, to change the settings, press the data fields, and use the
typing pad to type the new setting. 
Declination (deg, - for west)
In degrees, use the – character to indicate west, for example - 10.
4. When finished, press OK.
5. To save the changes, press Apply. 
The changes are valid only after pressing Apply.
7.21 Selecting data display setting (ATC)
You can select how the wind speed and wind direction data values are displayed in the ATC
layout.
1. Enter Maintenance mode.
2. On the Advanced settings page, press Data settings.
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