Since most geophysical work are based on inversion methods, the problem increase with the nonuniqueness, meaning that there are several interpretations of the information available. Undoubtedly, sufficient knowledge, precision, experience and information on the field data are required to achieve the correct and reliable result in each steps of the field operation, data acquisition, data processing and data interpretation. Mistake or imprecise in any of the above steps prevent interpreter from getting closer to the actual results. Most of the geophysical data are related to the relevant devices. There data are not completely reliable and are always associated with errors due to various (human or instrument) causes. Therefore, most field data are not 100% true even after the required corrections and processing. Results need to the close unique data and higher accuracy and good precision.