Dati sulla qualità dell'aria forniti da: the China National Urban air quality real-time publishing platform (全国城市空气质量实时发布平台) (113.108.142.147:20035) and the Hunan Environmental Protection Agency (湖南省环境保护厅) (hbt.hunan.gov.cn) and the Weather Underground (wunderground.com) and the Department of Ecology and Environment of Fujian Province (福建省生态环境厅) (sthjt.fujian.gov.cn) and the Department of Ecology and Environment of Fujian Province (福建省生态环境厅) (hbt.fujian.gov.cn)