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3 O 



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ZA OCT 88 - I HUT 73 

 X EXTRHPOLBTEO OBTUfl 



196E 196S 1964 196S 1966 1967 186% 1969 1970 1971 197) 1378 



unit voluhe c^^^e lime s rt 



WbW Wlk 15 



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1962 1969 1964 1966 1966 1967 196* 1969 1970 1971 1972 1973 



UNIT V0LUI1E CHANGES FOR PROFILE LINE 6 RT 



rtlrytic cm nj 



136 



