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Snapshots of the numerical solution, g(t, z), for the PDE model (2). Left: 3-D plot of the surface g(t, z). Middle: plot of g(ti, z) for time values ti over range, with ti = 6, 11, 16, 20. Right: plot of g(t, zj) for range values zj over time, with zj = 11, 21, 31.
