Fig. 6. Directly and inversely estimated unsaturated hydraulic conductivity curves for the Columbia soil as a function of applied pressure (a) 0–500 mbar, (b) 0–250–500 mbar, (c) 0–125–250–375–500 mbar, (d) directly estimated curves for all experiments for the bottom part of the sample (K₃), (e) inversely estimated curves for all experiments. (Only the curves for the middle and bottom compartments are shown)

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