Surface gravity and mean T_eff for the 3D model atmospheres in the CIFIST grid. The top-left (circles), top-right (stars), bottom-left (squares) and bottom-right (triangles) panels represent different metallicities, with [Fe/H] = 0, − 1, − 2 and − 3, respectively. For simplicity, pure-hydrogen white dwarfs (open triangles) are represented along the [Fe/H] = − 3 stars (note the different scale for this panel). T_eff values are colour-coded from red (cool) to blue (hot) and log g values (cgs units) are size-coded from small (high gravity) to large (low gravity) symbols. The x- and y-axis can be used as legends for the following figures. There is no link between white dwarfs and stars with the same sizes and colours.