London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
London County Council 1949
[Report of the Medical Officer of Health for London County Council]
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Table 39 (continued)
| Place and period | Rainfall, mm. | Insoluble matter | Total soluble matter | Total solids | Included in soluble matter | pH value | |||
|---|---|---|---|---|---|---|---|---|---|
| Tar | Carbonaceous other than tar | Ash | Sulphates SO4 | Chlo-rions Cl1 | |||||
| 1949 | 39.7 | 018 | 3.98 | 7.14 | 5.75 | 17.05 | 2.25 | 0.74 | 5.2 |
| 1948 | 48.4 | 0.24* | 3.92* | 6.94* | 5.81* | 16.91* | 2.50 | 0.76 | 5.3 |
| 1947 | 43.8 | 0.22 | 3.66 | 7.34 | 6.01 | 17.23 | 2.68 | 0.65 | 5.4 |
| 1946 | 58.2 | 0.20 | 3.73 | 6.36 | 6.01 | 16.30 | 2.51 | 0.82 | 5.4 |
| 1945 | 42.5 | 0.22 | 3.70 | 6.45 | 6.44 | 16.81 | 2.40 | 0.73 | 5.3 |
| 1945-49 | 38.6 | 0.21 | 3.80 | 6.85 | 6.00 | 16.86 | 2.47 | 0.74 | 5.3 |
| 1940-44 | 48.5 | 0.23 | 3.26 | 5.52 | 6.79 | 15.80 | 2.76 | 0.77 | 5.2 |
| 1930-39 | 47.4 | 0.29 | 3.77 | 6.98 | 6.56 | 17.60 | 2.55 | 0.73 | 5.1 |
| 1920-29 | 50.1 | 0.21 | 3 79 | 7.30 | 7.87 | 19.17 | 2.92 | 1.20 | — |
| 1949 | 37.8 | 0.17 | 2.23 | 3.47 | 3.62 | 9.49 | 1.37 | 0.54 | 5.3 |
| 1948 | 42.6 | 0.13 | 1.72 | 2.63 | 3.65 | 8.13 | 1.60 | 0.59 | 5.2 |
| 1947 | 39.2 | 0.16 | 2.21 | 3.75 | 3.68 | 9.80 | 1.45 | 0.51 | 5.6 |
| 1946 | 64.6 | 0.13 | 2.36 | 3.32 | 4 .23 | 10.04 | 1.61 | 0.62 | 5.6 |
| 1945 | 41.8 | 0.12 | 1.95 | 2.80 | 3.24 | 8.11 | 1.06 | 0.48 | 5.4 |
| 1945-49 | 45.2 | 0.14 | 2.09 | 3.19 | 3.68 | 9.10 | 1.42 | 0.55 | 5.4 |
| 1940-44 | 51.6 | 0.15 | 2.49 | 3.08 | 5.53 | 11.25 | 1.91 | 0.56 | 5.1 |
| 1930-39 | 50.3 | 0.25 | 1.86 | 2.76 | 5.04 | 9.91 | 1.75 | 0.60 | 5.2 |
| 1920-29 | — | — | — | — | — | — | — | — | — |
| 1949 | 39.9 | 0.08 | 0.85 | 1.18 | 2.51 | 4.62 | 0.74 | 0.56 | 4.9 |
| 1948 | 60.0 | 0.06 | 0.74 | 0.89 | 2.84 | 4.53 | 1 .01 | 0.60 | 5.2 |
| 1947 | 42.8 | 0.10 | 1.37 | 1.12 | 4.53 | 7 12 | 1.09 | 0.49 | 5.5 |
| 1946 | 66.2 | 0.08 | 0.84 | 0.87 | 4.37 | 6.16 | 1.29 | 0.72 | 5.3 |
| 1945 | 61.9 | 0.05 | 0.92 | 1.08 | 3.95 | 6.00 | 1.16 | 0.62 | 5.2 |
| 1945-49 | 54.2 | 0.07 | 0.94 | 1.03 | 3.64 | 5.68 | 1.06 | 0.60 | 5.2 |
| 1940-44 | 59.0 | 0.06 | 0.72 | 1.43 | 3.69 | 5.90 | 1.14 | 0.54 | 5.8 |
| 1930-39* | 67.0 | 0.09 | 1.00 | 0.85 | 4.55 | 6.49 | 1 .31 | 0.77 | 5.5 |
| 1920-29 | — | — | — | — | — | — | — | — | |
*Part period only