data beryl ;
  input id age employ expose lt79 ;
cards;
1 42 13 1 5.4
2 46 14 2 7.3
3 43 4 4 3
4 25 3 3 2
5 26 3 4 5.4
6 55 3 4 5
7 23 9 4 3.7
8 24 4 4 5
9 38 3 3 2.8
10 24 3 4 2.2
11 28 3 4 2.5
12 38 3 4 3.1
13 26 3 4 2.5
14 28 9 4 .8
15 26 4 2 1.2
;
run;