Among Seoul’s subway lines, No. 1 has worst fine dust in air: data
thenewsapi
2021-12-17 12:15
Among Seoul’s subway lines, No. 1 has worst fine dust in air: data
Seoul’s Subway Line No. 1 posted the highest concentration of fine dust among all eight lines operated by Seoul Metro this year, data showed Thursday.  Subw...

http://www.koreaherald.com/view.php?ud=20211216000789

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