Table 4.
Spearman correlation coefficients for the estimates of ambient air pollutant concentrations
| Air pollutant | PM10 | SO2 | NO2 | CO | O3 |
|---|---|---|---|---|---|
| PM10 | 1 | 0.442 | 0.463 | 0.413 | 0.165 |
| SO2 | 1 | 0.339 | 0.452 | − 0.282 | |
| NO2 | 1 | 0.709 | − 0.210 | ||
| CO | 1 | − 0.235 | |||
| O3 | 1 |
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