Create the activities data set. MEALS records how many meals were served for breakfast, lunch, and dinner on the days that the cafeteria was open for business.

data meals;
   input date : date7. Brkfst Lunch Dinner;
   datalines;
02Dec96       123 234 238
03Dec96       188 188 198
04Dec96       123 183 176
05Dec96       200 267 243
06Dec96       176 165 177
09Dec96       178 198 187
10Dec96       165 176 187
11Dec96       187 176 231
12Dec96       176 187 222
13Dec96       187 187 123
16Dec96       176 165 177
17Dec96       156   . 167
18Dec96       198 143 167
19Dec96       178 198 187
20Dec96       165 176 187
23Dec96       187 187 123
;