STEP06:
  Python version: 3.6.9
  The 2D nonlinear convection equation.
  Saved initial solution in file "step06_initial_u.png".
  Saved initial solution in file "step06_initial_v.png".
  Saved final solution in file "step06_final_u.png".
  Saved final solution in file "step06_final_v.png".

STEP06:
  Normal end of execution.