Air quality data (data stream B) - Assessment areas 2020 (dataset)

Data stream B includes all information on the assessment areas – such as name, area code, demarcation, population, history, pollutants and protection targets, extension of deadline.数据流B（Data stream B）涵盖评估区域的全部相关信息，包括其名称、区域代码、区划边界、人口状况、历史沿革、污染物情况、保护目标及延期期限等。