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On a clear day

Apr 11,2017
As the quality of the city’s air entered the “moderate” stage designated by the Seoul Metropolitan Government - when the concentration of PM10 dust particles per cubic meter of air ranges between 31 and 80 micrograms - the Lotte World Tower in southern Seoul is visible from the Posco E&C Tower in Incheon, some 50 kilometers (31 miles) away. [YONHAP]