Table 1.
Descriptive statistics of PM2.5, PM10 and AOD data at 5 and 10 km spatial resolutions from August to November 2003.
| Statistical parameter | PM2.5 (μg m−3)
|
PM10 (μg m −3)
|
AOD (5 km)*
|
AOD (10 km)
|
||||
|---|---|---|---|---|---|---|---|---|
| Delhi | Outside Delhi | Delhi | Outside Delhi | Delhi | Outside Delhi | Delhi | Outside Delhi | |
| Minimum | 30.5 | 70.0 | 117.7 | 172.1 | 0.548 | 0.549 | 0.611 | 0.603 |
| Mean | 82.9 | 95.7 | 304.2 | 466.5 | 0.647 | 0.612 | 0.662 | 0.636 |
| Maximum | 268.4 | 167.8 | 850.3 | 957.9 | 0.714 | 0.685 | 0.693 | 0.680 |
| Standard deviation | 38.8 | 26.9 | 148.4 | 229.7 | 0.038 | 0.051 | 0.019 | 0.031 |
| Skewness | 1.8 | 1.5 | 1.3 | 0.6 | −0.509 | 0.334 | −0.613 | 0.369 |
| Kurtosis | 7.7 | 5.0 | 4.5 | 2.6 | 2.415 | 1.511 | 2.636 | 1.343 |
| Coefficient of variation | 46.9 | 28.1 | 48.8 | 49.2 | 5.9 | 8.3 | 2.9 | 4.8 |