FIG. 7. The simulated zero-offset profile (ZOP) travel times resulting from the one-layered model for two selected days: (a) Day 1 and (b) Day 8. Only data collected from Day 8 were used to calculate the misfit values. The five realizations with the lowest misfit values are highlighted with red. The measured travel time profile is highlighted with green. An arrow points out the realization with a higher saturated hydraulic conductivity value.