Figure 2.

The data is written in ascii and contains the x and y
lengths of the simulation in units of Venus Radii, the
location of Venus in the simulation, the number of points
in the x and y directions and the solar wind density in
unints of 1/cm^3.  The data can be read with the follow
Fortran statements (for example):

read(10,*)xlength,ylength
read(10,*)Venusx, Venusy
read(10,*)nx,ny

do j = 1,ny
   do i = 1,nx
      read(10,*)nsw(i,j)
   enddo
enddo

The location of each grid point can be calculated by:

dx = xlength/(dx-1)
dy = ylength/(dy-1)

do j = 1,ny
   y(j) = (j-1)*dx - Venusy
   do i = 1,nx
      x(i) = (i-1)*dx - Venusx

The calculations for x and y can be included in the
above input section.

The density shown in the figure is the Log10 value
of the density so to reproduce the figure the log of
the density should be taken before plotting.