What is "altitudes"

Usage examples of "altitudes".

I have told you before that at these altitudes you simply must force fluids and calories.

About half of these, given rest and time to acclimate slowly to the new altitudes, got better.

He calculated the exact quantities of fuel consumed, and all the other critical measurements elevations, altitudes, temperatures, wind speeds.

Another adjustment caused the map to take on three-dimensional form, with the various altitudes of the clouds clearly conveyed from space.