What is the approximate air pressure at an altitude of 22 kilometers?

Average altitude and air pressure fraction of 1 atm 0 m = fraction of 1 atm: 0

5,486 m = fraction of 1 atm: 1/2

8,376 m = fraction of 1 atm: 1/3

16,132 m = fraction of 1 atm: 1/10

30,901 m = fraction of 1 atm: 1/100