188 



187 



186 



(851- 



164 



183 



182 



161 



-^180 



~I79 



Il78 



175 



Stafion 20 



24 S«pt, 1976 



13 Aug, 1975 



26 Moy 1969 



x 



90 60 70 60 SO 40 



190 - 

 188 

 186 

 184 

 „ 182 



E 



I 1 60 



o 



o 



Ul 



178 

 177 

 176 

 175 

 174 



30 20 10 



Distance from Base (m) 



STATION 21 



20 Sept. 1976 



-10 -20 -30 -40 -50 -60 



13 Aug. 1975 



X' 



y 



100 90 80 70 60 50 



40 30 20 10 

 Distance from Bose ( m ) 



-10 -20 -30 -40 



-50 



67 



