L1 /   
2
CH3041
[O3]
r(O3)
T
 z
(km)
THE OZONE LAYER
The Ozone Layer    15 - 35 km
• Ozone is still a trace gas in this layer as the maximum [O3] is just 9 - 11 ppm.
 1 O3 / 106 molecules                   

                                                                            1012 O3 / cm3