داده های کیفیت هوا ارائه شده توسط: the Weather Underground (wunderground.com) and the Guangdong Environmental Protection public network (广东环境保护公众网) (gdep.gov.cn) and 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)