What does the figure 2^4 indicate in terms of aviation navigation?

The figure 2^4 specifically represents the maximum elevation figure (MEF) for a given quadrangle on aviation navigation charts. In the context of aviation, this figure is crucial for pilots as it indicates the highest terrain or obstacle elevation in that specific area, rounded up to the nearest hundred feet, plus a buffer for safety. This information helps pilots ensure they maintain safe altitude during flight, particularly in regions with varying terrain, and is an essential component for navigational awareness and safety.

Understanding this figure is vital for flight planning as it aids in selecting appropriate cruising altitudes and assists in avoiding potential collisions with obstacles during flight operations. The other options relate to different aspects of navigation and operational constraints, but they do not specifically define the meaning of the figure in question.