And here you can see the principles of this technique of the operation. By that technique one can receive very exact results about the position and depths of the ground water effective zone. The thickness of this zone you get the distribution of the ground water within the saturated zone, further the degree of homogeneity of the aquifer, the vertical distribution of the aquifer's field, further the answer if an exchange between different formations can happen. In this case you have an exchange of the lower aquifer which is under pressure with the upper aquifer which is under lower pressure, therefore you have an upstream and exchange of the two aquifers.
In connection with pumping, or in this case with confined conditions, one receives data about the permeability coefficient in half the aquifer.