Table 5.
Ambient air pollutants in Delhi and other major cities 2001–2002 and 2004–2005 (μgm–3 (95% CI))
| City name | 2001 | 2002 | 2001–2002 | 2004 | 2005 | 2004–2005 | 2001–02 – 2004–2005 | |
|---|---|---|---|---|---|---|---|---|
| Delhi (ITO B.S.Z Marg) | SO2 | 13.6 (±0.70) | 10.5 (±0.52) | 11.8 (±0.45) | 8.8 (±0.51) | 9.0 (±0.40) | 8.9 (±0.32) | –2.90 (±0.56) |
| NO2 | 70.6 (±2.38) | 76.2 (±2.30) | 73.8 (±1.68) | 86.8 (±3.70) | 84.6 (±2.36) | 85.4 (±2.02) | 11.55 (±2.62) | |
| PM10 | 178.7 (±21.9) | 284.8 (±34.7) | 240.2 (±22.7) | 210.1 (±13.7) | 257.3 (±15.0) | 239.8 (±10.9) | –0.83 (±25.9) | |
| Kanpur (Vikas Nagar) | SO2 | 4.4 (±0.23) | 4.0 (±0.06) | 4.2 (±0.11) | 4.3 (±0.19) | 4.1 (±0.04) | 4.1 (±0.07) | –0.07 (±0.15) |
| NO2 | 30.4 (±2.59) | 19.4 (±1.24) | 24.4 (±1.46) | 18.6 (±1.68) | 20.2 (±0.97) | 19.6 (±0.87) | –4.80 (±1.93) | |
| PM10 | 200.8 (±22.4) | 160.3 (±14.1) | 178.5 (±12.8) | 185.8 (±27.6) | 205.2 (±18.2) | 198.3 (±15.3) | 20.42 (±20.1) | |
| Chennai (Adyar) | SO2 | 4.0 (±0.07) | 4.0 (±0.04) | 4.0 (±0.03) | 5.5 (±0.57) | 5.5 (±0.27) | 5.5 (±0.29) | 1.44 (±0.36) |
| NO2 | 15.6 (±2.71) | 10.0 (±0.67) | 11.2 (±0.85) | 12.8 (±1.00) | 21.3 (±1.27) | 17.6 (±1.02) | 6.44 (±1.43) | |
| PM10 | 60.1 (±8.7) | 37.3 (±3.8) | 41.7 (±3.8) | 58.1 (±6.0) | 56.5 (±4.1) | 57.2 (±3.5) | 15.45 (±5.3) | |
| Kolkata | SO2 | 5.2 (±0.34) | 5.1 (±0.34) | 5.2 (±0.24) | 6.7 (±1.09) | 7.4 (±0.63) | 7.1 (±0.59) | 1.89 (±0.57) |
| NO2 | 42.9 (±3.13) | 42.8 (±2.65) | 42.8 (±2.03) | 38.1 (±2.96) | 48.1 (±2.78) | 43.9 (±2.12) | 1.01 (±3.00) | |
| PM10 | 74.9 (±8.8) | 95.9 (±8.3) | 86.1 (±6.1) | 157.0 (±17.2) | 153.1 (±16.1) | 154.8 (±11.8) | 68.37 (±12.3) | |
| Vadodara | SO2 | 6.6 (±0.77) | 5.2 (±0.47) | 5.8 (±0.44) | 9.2 (±2.06) | 6.0 (±0.85) | 7.2 (±0.96) | 1.43 (±0.93) |
| NO2 | 24.1 (±2.98) | 25.9 (±2.22) | 25.1 (±1.81) | 22.2 (±3.15) | 20.0 (±2.20) | 20.8 (±1.82) | –4.35 (±2.73) | |
| PM10 | 72.1 (±8.9) | 76.9 (±6.6) | 74.8 (±5.4) | 66.4 (±10.8) | 81.8 (±7.8) | 76.1 (±6.4) | 1.28 (±8.5) | |
| Mumbai | SO2 | na | na | na | 16.6 (±2.03) | 24.9 (±1.11) | 22.0 (±1.11) | na |
| NO2 | na | na | na | 92.3 (±8.81) | 91.8 (±7.47) | 91.9 (±5.75) | na | |
| PM10 | na | na | na | 526.1 (±71.0) | 213.3 (±6.1) | 318.8 (±30.1) | na |
These results were extracted using the data acquired from Central Pollution Control Board (Government of India, 2007).