Time-distance plots of a vertical pencil in the simulation domain at X = 12 Mm and Y = 12 Mm. Quantities shown are; the vertical flow velocity v_z, the normalised vertical magnetic field B_z/|B|, the ratio of the Alfvén speed to the sound speed v_A/c_s, the plasma temperature T, the density fluctation with respect to the average of the horizontal domain δρ/⟨ρ⟩_xy, and the vertical Poynting flux S_z.