Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune
Oxygen	42	0	21	0	0	0	0	0
Sodium	29	0	0	0	0	0	0	0
Hydrogen	22	0	0	0	90	96	83	80
Carbon dioxide	0	96	0	95	0	0	0	0
Nitrogen	0	3	78	3	0	0	0	0
Argon	0	0	1	1.5	0	0	0	0
Helium	0	0	0	0	10	3	15	19
Methane	0	0	0	0	0	0	2.5	1