-3500.0     0.0
13000.0     0.0
1.0    -99999.0
-3500.0  2000.0
13000.0  2000.0
1.0    -99999.0
-3500.0  3000.0
13000.0  4000.0
1.0    -99999.0
-3500.0  6500.0
0.0      6000.0
4000.0   6500.0
6000.0   8500.0
8000.0   6500.0
10000.0  6000.0
13000.0  6500.0
1.0    -99999.0
