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Rh'°2 CONCENTRATIONS ABOVE 194 km.
© OP10°N
© 40°-50°N
A i0%20°N
9 50°—60°N
20°-30°N
x 60°-70°N
+ 30°-40°N
Stet ta
|
"JASON Dy
MTT ASTON DE MAM IA ‘SOND )J FMAM JAS ONDjJ FF MAMY
1958
1959
1960
IS6I
Fig. 1 -- Concentration as a function of time for different northern latitude regions