| Table 4.16 Summary recorded contraventions of air pollution acts, 1987-19961,2 |
| | | | 1987 | 1988 | 1989 | 1990 | 1991 | | 1992 | 1993 | 1994 | 1995 | 1996 |
| Clean Air Acts 19933 |
| Contraventions | | 508 | 876 | 500 | 627 | | 574 | | 391 | | - | | - | | - | 2514 |
| Prosecutions | | 3 | 124 | 28 | 45 | | 32 | | 23 | | - | | - | | - | | 0 |
| Convictions | | - | 4 | - | 13 | | 2 | | 6 | | - | | - | | - | | 0 |
| Clean Air Act 1993-Section 335 |
| Contraventions | | 81 | 40 | 50 | 26 | | 62 | | 23 | | - | | - | | - | | 16 |
| Prosecutions | | 3 | - | 3 | 4 | | 2 | | 6 | | - | | - | | - | | 0 |
| Convictions | | - | - | 2 | 2 | | - | | 2 | | - | | - | | - | | 0 |
| | | | | | | | | | Source: Royal Environmental Health Institute of Scotland |
| 1 Population year period (e.g. April 1980-March 1981). |
| 2 No returns were made for the years 1993-1995. |
| 3 Formerly Clean Air Acts 1956/68. |
| 4 This figure is the sum of contraventions of the Clean Air Act 1993, Section 1, Section 2, and Section 23. |
| 5 Formerly Control of Pollution Act 1974 (Section 78). |