data insectdeaths; 
input INSECTICIDE $  DEAD;
cards;
 A 85
 B 90
 C 93
 D 98
 A 82
 B 92
 C 94
 D 98
 A 83
 B 90
 C 96
 D 100
 A 88
 B 91
 C 95
 D 97
 A 89
 B 93
 C 96
 D 97
 A 92
 B 81
 C 94
 D 99
;
run;