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FROM LAYER 3 <br /> PERCOLATION/LEAKAGE THROUGH 2 . 15872 ( 1 . 61348) 7836.154 15.434E <br /> LAYER 4 <br /> ,VERAGE HEAD ON TOP 0. 031 ( 0 . 055) <br /> OF LAYER 4 <br /> CHANGE IN WATER STORAGE 0 . 047 ( 2 . 3500) 169.83 0 . 335 <br />