A falling-head hydraulic conductivity test was performed on a soil sample 97-mm in diameter and 20-mm long. The stand pipe had an inside diameter of 6.0 mm. The water level in the bath surrounding the sample was 120 mm above the laboratory counter top and the water level in the standpipe fell from a height of 510 mm to 261 mm above the counter top in 46 hours and 35 minutes. Compute the hydraulic conductivity of the soil sample. Does the result seem reasonable