Podatke o kvaliteti zraka osigurao: 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 Shenyang Air Quality Monitor (china.usembassy-china.org.cn) and the Liaoning Provincial Environmental Monitoring (辽宁省环境保护厅) (sthj.ln.gov.cn)