Fifty-day moving average temperature and velocity distribution along the Voyager-2 trajectory. The results are presented for three model runs. Green curves correspond to the run in the framework of the model described by Eq. A.1 with three nonzero components of the velocity and magnetic field. Red curves correspond to the test run where the magnetic field is ignored. Blue curves correspond to the run where both magnetic field and nonradial components of the velocities are ignored. The figure shows that the results of all runs are identical and therefore a simple 1D gas-dynamic model is sufficient for the purposes of this work.