| GRAPHICAL DATA : 1.
Sulphur Dioxide (SO2) 2.
Nitrogen Dioxide (NO2) 3.
Respirable Suspended Particulate Matter(RSPM) TABULAR DATA :
| City (Location) | Concentration (µg/m3) |
| Sulphur dioxide (SO2) | Nitrogen dioxide (NO2) | Respirable Suspended Particulate Matter (RSPM) | Carbon monoxide (CO) |
| National Standard | 80 | 80 | 100 | 2000 | | Chennai (Anna Nagar) | 4 | 4 | 35 | _- |
| Delhi (B.S.Z.Marg) | 6 | 49 | 170 | 312 |
| Kanpur (Vikas Nagar) | 4 | 15 | 104 | - |
| Kolkata (Jatin Das Park) | 4 | 58 | 48 | - |
| Vadodra (Subhanpura) | 4 | 9 | 28 | - | |