4   5   8   0
 0.5      150.     1.0     120.      500.   
 0.0        0.0     
 31180.     -68.800     17.147
 33540.     -68.860     17.110
 36080.     -68.980     17.083
 37440.     -68.993     17.138
 28800.     38700.
28800.       31170. 
31190.       32310. 
32550.       33530. 
33550.       34820. 
34910.       36070. 
36090.       36720. 
36920.       37430. 
37450.       38700.