monitoring programmes are usually constructed when scientific interest in research exists andor when policy or quality norms are established for specific areas that show the most problematic signs of marine pollution the data from these monitoring stations require further processing to produce environment statistics on the water quality of specific locations spatial and temporal considerations are very important when constructing statistics on this topic for instance with regard to oceanic and marine water pollutant concentrations most monitoring stations and water regular quality monitoring programmes focus on surface marine water and coastline zones