SGX-SGY slice centered on SGZ = 0 Mpc h⁻¹ and of width 7.8 Mpc h⁻¹ of the overdensity field reconstructed from CF4 galaxies (left panel) and groups (right panel) overlapped with the gravitational basins identified in the associated velocity field. Basins of attraction are indicated with filled contours with no border line, and basins of repulsion are shown with empty contours with solid, dashed, or dotted black lines. The name of each corresponding structure is also included.