ATPL Meteorology Practice Questions - CASA Airline Transport Pilot Licence (Aeroplane) - Meteorology (AMET) Exam

It is highest at the equator (approximately 16-18 km / FL500-FL600) and lowest at the poles (approximately 8-10 km / FL260-FL330). It is lowest at the equator (8-10 km) and highest at the poles (16-18 km). It remains at a constant height of approximately 11 km (FL360) globally. It is highest in the mid-latitudes (15-16 km) and slopes down towards both the equator and the poles.