Garmin GTN 725 Pilot's Manual page 322

12.1.11 Freezing Level
Foreword
Freezing Level data shows the color-coded contour lines for the altitude and
Getting
location at which the Freezing Level is found. When no data is displayed for a
Started
given altitude, the data for that altitude has not been received, or is out of date
Audio &
and has been removed from the display. New data appears on the next update.
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Appendix
12-18
Index
1. While viewing the Data Link Weather menu, touch the
Freezing Level key.
Figure 12-22 Freezing Level
2. Touch the Freezing Level key again to turn it off.
Figure 12-23 Freezing Level Legend
Garmin GTN 725/750 Pilot's Guide
Product Age
Freezing Level Line
Freezing Level Line
Present Position
190-01007-03 Rev. D