Maps of the gravitational pressure $P_{\mathrm{g}\mathrm{r}\mathrm{a}\mathrm{v}}=G{\mathrm{\Sigma }}_{\mathrm{g}\mathrm{a}\mathrm{s}}^2$ of the gas (see the text for details) in the x-y plane and in the central region of the simulations in the FC22 (first column from left), ‘Winds, SFE=0.1’ (second), ‘Winds, SFE=1.0’ (third) and ‘Winds, THIMF’ (fourth) models. The maps are at z = 15.5 (upper row), z = 13 (middle row) and z = 10.5 (bottom row). The horizontal white solid lines shown in the left-hand column-panels indicate the physical scale. In each panel we report also the 1D density-weighted velocity dispersion of the cold medium (with temperature <200 K) calculated as in Eq. (11).