A device may determine a first distance between a viewer and a display of a device. The irradiation device and the detection device are fixedly or rigidly associated with one another. The surveying arrangement also includes a first horizontal receiver array located in the weathered layer, and means for processing seismic data acquired by the first receiver array. The electrode is supported by the outer surface of the housing. The decision tree method includes the steps of reading the data; creating a histogram; evaluating a potential split according to some criterion using the histogram, selecting a split point randomly in an interval around the best split, splitting the data, and combining multiple decision trees in ensembles.