The volume of air (and any other gas as well) depends on:
But what is the meaning of 'at four duration'?
[Sorry, can't help you with that.]
temperature,volume,height and, water vapor
The duration of After Four is 1800.0 seconds.
Four hours by air from London should get you to Moscow or Istanbul.
The duration of Pump Up the Volume - film - is 1.75 hours.
There are four elements of sound. These elements are pitch, timbre, duration and intensity. Timbre is the quality of sound, pitch is a tone from a number of vibrations per second, intensity is volume, and duration is length.
The duration of Four Daughters is 1.5 hours.
The duration of Four Kings is 1380.0 seconds.
The duration of Four Lions is 1.62 hours.
The duration of Four Rooms is 1.7 hours.
The duration of Four's a Crowd is 1.53 hours.
The duration of Four of the Apocalypse is 1.73 hours.
The duration of Four on the Floor is 1560.0 seconds.