ہوا کے معیار کا ڈیٹا فراہم کردہ: the China National Urban air quality real-time publishing platform (全国城市空气质量实时发布平台) (106.37.208.233:20035) and the U.S. Consulate Guangzhou Air Quality Monitor (china.usembassy-china.org.cn) and the Guangzhou Environmental Protection Bureau (广州市生态环境局) (sthjj.gz.gov.cn)