Table 4.
Cluster 1 | Cluster 2 | Cluster 3 | Cluster 4 | Cluster 5 | |
---|---|---|---|---|---|
Fe/Si | 1.95 | 1.30 | 2.22 | 1.14 | 2.34 |
K/Si | 1.34 | 0.71 | 1.35 | 0.71 | 1.54 |
BC/Sulfate | 0.27 | 0.29 | 0.33 | 0.13 | 0.26 |
NO/NO2 | 0.73 | 0.63 | 1.58 | 0.44 | 0.87 |
NO2/BC | 31.35 | 26.55 | 21.73 | 17.00 | 28.94 |
NO2/O3 | 0.54 | 0.59 | 2.47 | 0.41 | 1.08 |
Su/PM25 | 0.29 | 0.26 | 0.24 | 0.38 | 0.28 |
BC/PM25 | 0.08 | 0.07 | 0.08 | 0.05 | 0.07 |
PN/PM25 | 4.57 | 4.06 | 5.84 | 4.53 | 5.60 |