For a range of experimentally measured current values for anti-force waves (lightning return strokes), we have been able to integrate our modified set of electron fluid-dynamical equations through the sheath region of the wave, and our solutions meet the expected physical conditions at the trailing edge of the wave. Our results indicate that as the wave speed decreases, the current values for which solutions to the set of electron fluid-dynamical equations become possible decreases as well. Our solutions also indicate that as the wave speed decreases, the sheath thickness increases as well, therefore making integration of the set of equations through the sheath region of the wave very time-consuming and difficult. Slow waves have lower electron gas temperature as well.
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