Table 3.
Summary of cluster profiles (on original scale): distribution means (95% CI) for characteristics of clusters from the representative clustering.
| Particle compounds | Cluster 1 (1156 days) | Cluster 2 (63 days) | Cluster 3 (242 days) |
|---|---|---|---|
| PNC (cm− 3/1000) | 20.08 (19.54, 20.67) | 27.01 (23.63, 30.42) | 24.56 (22.58, 26.51) |
| Chloride (μg/m3) | 1.38 (1.28, 1.47) | 1.43 (0.95, 1.90) | 0.90 (0.62, 1.21) |
| Nitrate (μg/m3) | 2.90 (2.73, 3.41) | 3.76 (2.19, 7.74) | 8.58 (6.49, 9.90) |
| Sulphate (μg/m3) | 2.61 (2.49, 2.79) | 2.65 (1.73, 4.54) | 4.76 (3.94, 5.50) |
| BS (μg/m3) | 5.48 (5.33, 5.76) | 9.80 (7.59, 11.57) | 8.83 (7.65, 9.82) |
| PM10 (μg/m3) | 23.16 (22.51, 25.48) | 37.24 (26.94, 45.09) | 42.52 (37.61, 47.25) |
| PM2.5 (μg/m3) | 15.65 (15.12, 17.40) | 28.45 (19.10, 35.12) | 32.09 (26.84, 35.82) |
| Coarse (μg/m3) | 7.57 (7.32, 7.88) | 8.87 (7.23, 10.57) | 10.36 (8.82, 12.00) |
| PPM10 (μg/m3) | 3.95 (3.82, 4.22) | 7.61 (5.95, 9.70) | 7.10 (5.79, 8.06) |
| NPPM10 (μg/m3) | 10.27 (9.97, 10.73) | 11.93 (7.68, 15.86) | 17.32 (15.21, 19.46) |
| NPPM2.5 (μg/m3) | 4.56 (4.34, 5.01) | 12.04 (5.41, 18.76) | 10.90 (8.74, 12.27) |
| NPcoarse (μg/m3) | 5.76 (5.61, 5.91) | 5.70 (4.87, 6.63) | 6.96 (6.12, 7.86) |