When the Aus LL GPWT option is selected, thumbnails of all available GPWT charts are displayed in a grid view, grouped in the validity times. Tap on a thumbnail to view a chart.
GPWTs outline wind and temperature profiles for a three-hour period, from the Surface to 14,000 feet. Your flight plan route is overlaid as a red line on the charts, so you can visualise which grids your planned track passes through.
Each grid square contains three columns of data:
- Left column: Wind direction in two figures, rounded to the nearest 10° (e.g. 270° is displayed as 27, 090° is displayed as 09, and so forth)
- Centre column: Wind velocity in three figures
- Right column: Temperature (red for positive temps, blue for negative)
And six rows, each one representing an altitude AMSL:
- 14,000 ft
- 10,000 ft
- 7,000 ft
- 5,000 ft
- 2,000 ft
- 1,000 ft
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