data fisheggs;
  input density eaten ;
cards;
70 8
70 10
70 10.5
72 11
71 14
36 9
37 9
37 10.5
37 12.5
32 4.5
23 4.8
22 6
23 7
23 8.5
23 10
12 4.5
12 5
12 6.2
12 6.6
8 5
7 4
7 4.2
4 2
4 2.8
2 1
0 0
;
run;