Table: ATMOSPHERIC POLLUTION - MEASUREMENT OF SMOKE, SULPHURDIOXIDE AND SOLID DEPOSITS
ATMOSPHERIC POLLUTION - MEASUREMENT OF SMOKE, SULPHUR
DIOXIDE AND SOLID DEPOSITS
| Smoke (milligrams per 100 cubic metres) | Sulphur dioxide (parts per 100 million parts of air) | Solid deposits (tons per sq. mile) |
|---|
| Monthly average | Highest daily reading | Lowest daily reading | Monthly average | Highest daily reading | Lowest daily reading | |
|---|
| (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | (c) | (d) | (e) |
|---|
| January | 15 | 18 | 9 | 38 | 54 | 43 | 5 | 8 | 1 | 4.6 | 5.3 | 6.7 | 13.5 | 29.0 | 20.0 | 1.2 | 1.4 | 1.6 | 13.31 | 8.64 | 13.95 |
| February | 15 | 19 | 20 | 34 | 37 | 40 | 6 | 11 | 10 | 4.7 | 5.9 | 9.0 | 14.3 | 15.0 | 21.8 | 1.5 | 1.4 | 2. 5 | 15. 40 | 11. 20 | 15.85 |
| March | 12 | 13 | 15 | 27 | 27 | 26 | 4 | 5 | 6 | 4.6 | 7.0 | 8. 0 | 9.2 | 36.7 | 15.8 | 1.8 | 2.5 | 3.2 | 18. 59 | 15. 68 | 17.01 |
| April | 7 | 8 | 9 | 20 | 17 | 20 | 3 | 4 | 3 | 3.7 | 3.6 | 5.4 | 8. 5 | 8. 2 | 13.6 | 2.0 | 1.9 | 2.1 | 20.63 | 10.13 | 14.73 |
| May | 6 | 7 | 8 | 13 | 15 | 17 | 1 | 3 | 2 | 4.0 | 3.2 | 5.4 | 8.9 | 7. 5 | 12.4 | 0. 6 | 1.0 | 1.6 | 12.16 | 11.99 | 11. 24 |
| June | 3 | 4 | 3 | 11 | 14 | 8 | 1 | 1 | 1 | 2.2 | 2.2 | 2.4 | 7.7 | 8.0 | 9.8 | 0.9 | 0.7 | 0.2 | 12.19 | 8.76 | 12.85 |
| July | 2 | 3 | 3 | 5 | 7 | 9 | 1 | 1 | 1 | 1.4 | 1.5 | 1.3 | 2.5 | 2.3 | 3.5 | 0.2 | 0.7 | 0.4 | 9.02 | 7. 24 | 12.08 |
| August | 3 | 4 | 4 | 6 | 8 | 10 | 1 | 1 | 1 | 1.6 | 1.5 | 1.9 | 3.4 | 3.0 | 4.6 | 0.2 | 0.5 | 0.5 | 8.21 | 6.99 | 12.37 |
| September | 5 | 7 | 7 | 8 | 12 | 14 | 1 | 2 | 1 | 1.3 | 1.5 | 2.6 | 3. 5 | 3.3 | 4.6 | 0.0 | 0.4 | 0. 5 | 9.72 | 8.62 | 12.76 |
| October | 9 | 14 | 15 | 20 | 27 | 31 | 4 | 8 | 9 | 2.6 | 4.3 | 6.7 | 5.0 | 8.2 | 15.8 | 1.0 | 1.4 | 1.5 | 9.80 | 8.24 | 10.65 |
| November | 12 | 17 | 18 | 32 | 35 | 40 | 3 | 6 | 7 | 3.3 | 4.7 | 7.3 | 9.0 | 15.8 | 10.2 | 0.9 | 1.9 | 3.2 | 12.19 | 10.76 | 19.32 |
| December | 14 | 21 | 22 | 31 | 49 | 57 | 3 | 4 | 7 | 4.5 | 8.1 | 9.8 | 8.6 | 29.6 | 20.3 | 1.0 | 0.9 | 4.0 | 12. 69 | 10.68 | 14. 69 |
| Sites: (a) Fortis Green Depot. Disinfecting Station, (c) Tom Hall. (d) Highgate Depot, North Hill.(e) Electricity Sub-Station, Hampden Road. |
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