4  5  8  0
0.5  150.  1.0  50.  850. 
19172.   20.832   -91.907 
25041.   20.928   -92.195 
31209.   20.907   -92.197 
37241.   21.087   -92.282 
 16561.   39209.
16561.   19040. 
19160.   21072. 
23392.   24880. 
24985.   27030. 
29346.   31212. 
31338.   33016. 
35481.   37162. 
37245.   39209.