H=50m. c=800m/s.
V G B
3 
3
0 1500 0 0 0 1 0
0 1800 800 0.1 0.2 1.8 0
50 5250 2500 0.1 0.2 2.6 0
-1
0 0 1
400 2000
500 1 500 0
256 1.0 12.0 0.01 0.5 0.5 0
2
0 12 15 2
0 2000 10 500