Atmospheric parameters at two heights. Left: z = 0 km, i.e., at the average level of formation of the continuum. Right: z = 240 km, approximate height of the line core formation of our three selected lines. From top to bottom the hydrogen number density, nH (relative to the maximum value at that height), the vertical velocity, vz (with negative values denoting up-flows), and the temperature T are plotted.
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