Phase portraits of gas, presenting the normalised 2D histograms of the gas cells in the corresponding structures. First panel: gas in filaments (within 1 Mpc from the core). Second panel: gas within the R₂₀₀ radius of galactic haloes (defined as haloes of mass M_tot > 10¹² M_⊙ hosting at least one galaxy of mass 10⁹ ≤ M_∗[M_⊙] ≤ 10¹²). Third panel: gas within the R₂₀₀ radius of the DisPerSE maximum density critical points (CPmax), tracers of nodes. The 68% and 99% contours correspond to results of short (orange) and long filaments (blue), to galactic haloes (dotted green lines), and CPmax (dash-dotted red contours).