Fig. 2. (a) Correlation between daily mean PM10 (black circle) and PM2.5 (red triangle) at two observation sites in the Seodaemun-gu area during whole research period (March to December 2016), expressed by determining coefficients (R2). (b) Monthly variation of R2 for PM10 and PM2.5 between two observation sites in the Seodaemun-gu district during the research period.
Fig. 3. Monthly mean variation of PM10 (black circle) and PM2.5 (red triangle) at (a) Yonsei university and (b) AIRKOREA sites in the Seodaemun-gu district during the research period (March to December 2016).
Fig. 4. Monthly variation of (a) PM10-PM2.5 difference and (b) PM2.5/PM10 ratio for both sites in the Seodaemun-gu district.
Fig. 5. Hourly mean variation of PM10 (black) and PM2.5(red) at (a) Yonsei university and (b) AIRKOREA sites in the Seodaemun-gu district during the research period (March to December 2016).
Fig. 6. During the research period (March to December 2016), mean PM10 (yellow) and PM2.5 (brown) values at (a) Yonsei university and (b) AIRKOREA sites for each sector of wind speed are compared.
Fig. 7. During the research period (March to December 2016), mean PM10 (yellow) and PM2.5 (brown) values at (a) Yonsei university and (b) AIRKOREA sites for each sector of wind direction are compared.
Fig. 8. Correlation coefficients of PM10 (black circle) and PM2.5 (white triangle) between the Yonsei university and AIRKOREA sites for each sector of (a) wind speed and (b) wind direction.
Fig. 1. The location of two monitoring sites in the Seodaemun-gu district: Yonsei University and Seodaemun AIRKOREA sites.
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