x  y         
9.4 35
3.5 15
0.8 7
18.4 50
58.8 90
NA  50
8.8 45
18.7 60
19.0 48
2.6 25
0.7 5
1.2 15
21.0 60
1.4 18
14.5 60
23.4 60
18.2 50