Horizontally and temporally averaged thermodynamic properties of the simulated chromosphere. Top: Hydrogen ionisation fraction and chromospheric filling factor, which is the area fraction at each height with a temperature below 20 kK. Middle: Temperature (red) and density (black). The shaded areas cover two standard deviations around the mean. The density recovered from hydrostatic equilibrium is included in the middle panel. This was calculated including only the gas pressure (dashed); the gas and turbulent pressures (dash-dotted); and the gas pressure, turbulent pressure, and magnetic term (indistinguishable from the averaged density). Bottom: Error in the density calculated recovered with the hydrostatic equilibrium approximation. The vertical dashed lines represent the photosphere (z = 0 Mm) and the base of the chromosphere (z = 0.8 Mm).