| The maximum altitude a drone can physically reach |
| The height above the Earth's surface of the lowest layer of clouds reported as 'Broken' (BKN) or 'Overcast' (OVC) |
| Any cloud layer reported as 'Scattered' (SCT) |
| The top of a thunderstorm cloud |
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You can still continue with the free version, which gives you access to 75% of the questions with a limit of 3 simulations every 2 hours.
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...and much more!
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