Shallow water 
11
240. 242. 244. 246. 248. 250. 252. 254. 256. 258. 260.
1,20
5,5
1
50.
200.,0.,0.
      0.0000   1500.
    100.0      1500.
    200.0      1490.     
200.0,2.0,0.0
    0.0        1500.
  200.0        1800.
2.,0.1,1800.0
0.,0.
GROUP,PLT,PRT
XAXIS 240.0 260.0 20 5.0
YAXIS 1450.0 1500.0 12 5.0
@EOF