Table : TABLE 1.1 AT A GLANCE: Permanent Gases

PERMANENT GAS NAME	PERCENTAGE BY VOLUME
Nitrogen (N)	78.08
Oxygen (O)	20.95
Argon (Ar)	0.93
Neon (Ne)	0.0018
Helium (He)	0.0005
Hydrogen (H)	0.00005
Xenon (Xe)	0.000009