The top floor of the first floor, there are no pressure consists of water. Arrange the layers of adjacent aligned medium sand is located at a depth of 20-26 m with a typical resistivity value lower than 60 m Ω.
The top layer contains no water pressure. Arranged contiguously on a layer of sand. With medium At a depth of 20-26 meters, the resistivity generally below 60 Ωm.
The top of the water contains no pressure The sort that close to each other many layers of sand, with moderate size, depth 20-26 meters. The resistivity is generally lower 60 Ω m.