data auto;
input  driver 1. @;
   do car=1 to 5;
      input mpg @;
      output;
   end;
datalines;
1  25.3  28.9  24.8  28.4  27.1 
1  25.2  30.0  25.1  27.9  26.6 
2  33.6  36.7  31.7  35.6  33.7 
2  32.9  36.5  31.9  35.0  33.9 
3  27.7  30.7  26.9  29.7  29.2 
3  28.5  30.4  26.3  30.2  28.9 
4  29.2  32.4  27.7  31.8  30.3 
4  29.3  32.4  28.9  30.7  29.9 
;
run;