Fig. 6. Vertical and horizontal cross sections of relative solute concentration distributions in the monolith for a flow rate j_w⁰ of 1.64 x 10^–6 m s^–1 (Exp. 5) after an irrigation dose of 13.16 cm. Upper right: depth-averaged relative concentration for Case I (red line), Case II (green line), and Case III (blue line). The dotted white lines show the cutting planes.