90 80 70 60 50 40 30 20 10 



Oislonce from Basa ( m ) 



_ 180 



Sf-Qtion 2 



14 Sept. 1976 



II Aug. 1975 



3 Moy 1971 



15 Moy 1969 



100 90 80 70 60 50 



40 30 20 10 



Dijtonce from Base (m) 



-10 -20 -30 -40 -50 



56 



