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Fig. 9. Calibration of tracer breakthrough curves to estimate 
for the DCM with selected injection rates (2 and 10% of saturated flow rates). Capillary-barrier boundary condition (top); free-drainage condition (middle); free-drainage condition with 100 times higher matrix permeability at fracture-matrix connections (bottom). Closed symbols are data from the DFNM, open symbols with dashed line are from the DCM with = 0, and lines are the calibrations to estimated values.
