Table 2 Yearly mean SO2 of different AQI monitoring stations.
SO2 | ||||||
|---|---|---|---|---|---|---|
Sl. no | AQI station | Parameter | 2018 | 2019 | 2020 | 2021 |
1 | Kolkata | Maximum | 29 | 5 | 18 | 30 |
Minimum | 10 | 3 | 2 | 4 | ||
2 | Delhi | Maximum | 37 | 15 | 14 | 38 |
Minimum | 5 | 2 | 4 | 7 | ||
3 | Patna | Maximum | 21 | 14 | 12 | 23 |
Minimum | 5 | 3 | 2 | 6 | ||
4 | Chennai | Maximum | 27 | 19 | 15 | 34 |
Minimum | 9 | 4 | 3 | 5 | ||
5 | Mumbai | Maximum | 34 | 21 | 18 | 37 |
Minimum | 7 | 6 | 5 | 8 | ||
6 | Ahmedabad | Maximum | 13 | 9 | 10 | 14 |
Minimum | 4 | 4 | 3 | 2 | ||
7 | Bengaluru | Maximum | 27 | 11 | 14 | 29 |
Minimum | 6 | 3 | 5 | 6 | ||
8 | Lucknow | Maximum | 28 | 21 | 19 | 25 |
Minimum | 10 | 5 | 4 | 7 | ||
9 | Muzaffarnagar | Maximum | 31 | 24 | 21 | 28 |
Minimum | 8 | 9 | 7 | 9 | ||
10 | Guwahati | Maximum | 14 | 11 | 13 | 17 |
Minimum | 2 | 3 | 2 | 4 | ||
