x         y        

 10  123.4329
 10  138.8891
 10  140.8685
 20  209.8058
 20  221.6651
 20  165.9134
 30  356.2487
 30  271.2406
 30  414.5737
 40  359.0908
 40  481.5995
 40  441.3067
 50  489.4573
 50  518.8660
 50  594.0800
 60  816.2887
 60  494.7238
 60  542.6776
 70  797.5911
 70  759.4544
 70  636.1314
 80  912.7295
 80  726.4673
 80  869.2021
 90 1050.6986
 90  933.4428
 90  778.8119
100  993.8290
100 1001.1583
100  829.7837