These monitoring stations, operated by the relevant national or local environmental authority, typically produce data that require further processing to be converted into statistics on noise levels attributed to various causes and of specific origin. The resulting statistics, e.g., on noise levels and intensity, are produced for and are relevant to the specific local areas where the most problematic noise pollution conditions exist. They are not representative of the national territory. Statistics on noise levels in urban settlements are also relevant to Component 5: Human Settlements and Environmental Health.