45 



[NB: We excluded all ratings data for car and nicotine 

 where car = or nico-ine =0. In 1992, the zero's 

 accounced for 5% o£ data; tn 1983, the zero's accounted 

 for 7% of data; and in 1984, they accounted for 8% o£ 

 data. From 1985 to the present, the zero's were not 

 significant. The zero's, we believe, were the result of 

 unreported daca, and may or may not be randomly 

 distributed among all tar and nicotine categories . We 

 do not ioiow. 



In 1985, the standard deviation on the nicotine/tar ratio 

 appears to be anomolous -- again, we have no theory.] 



tab tarx 



tarx 



Freq. 



Percent 



Cum. 



high 



low 



ultralow 



894 



2206 



454 



25.15 

 S2.07 

 12.77 



25.15 



87,23 



100.00 



Total 



3554 



100.00 



Tar, Micatina and Tar/HicotiiB btioc By Tear 

 (Msi^tad br aalcsi 



I ^n c,^^ ^ )1?^ 



4o 



vPfe / ,S-«-^ ^ I'^'l J 



