Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for London County Council]
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Table 42
| Year | Beckton | County Hall Roof | Crossness | |||
|---|---|---|---|---|---|---|
| Percentage | Percentage | Percentage | ||||
| Above 0.2 p.p.m. | Below 0.1 p.p.m. | Above 0.2 p.p.m. | Below 0.1 p.p.m. | Above 0.2 p.p.m. | Below 0.1 p.p.m. | |
| 1949 | 15 | 61 | 10 | 55 | 0 | 97 |
| 1948 | 19 | 51 | 19 | 46 | 0.3 | 96 |
| 1947 | 12 | 59 | 18 | 51 | 0 | 94 |
| 1946 | 15 | 57 | 11 | 58 | 1 | 98 |
| 1945 | 25 | 48 | 9 | 52 | 0 | 97 |
| 1944 | 25 | 50 | 9 | 60 | 1 | 95 |
| 1943 | 28 | 42 | — | — | 1 | 93 |
| 1942 | 12 | 56 | — | _ | 0 | 92 |
| 1941 | 14 | 66 | — | _ | 0 | 97 |
| 1940 | 11 | 66 | — | — | 1 | 98 |
| 1939 | 14 | 61 | — | — | 0 | 96 |
| Average— | ||||||
| 1945-49 | 17 | 55 | 13 | 52 | 0.3 | 96 |
| 1940-44 | 18 | 56 | — | — | 1 | 95 |
Table 43
| 1949 | Beckton | County Hall | Crossness |
|---|---|---|---|
| January | 0.49 | 0.51 | 0.22 |
| February | 0.53 | 0.67 | 0.23 |
| March | 0.24 | 0.23 | 0.35 |
| April | 0.19 | 0.20 | 0.09 |
| May | 0.20 | 0.20 | 0.12 |
| June | 0. 09 | 0.17 | 0.11 |
| July | 0.09 | 0.17 | 0.10 |
| August | 0.17 | 0.14 | 0.10 |
| September | 0.12 | 0.18 | 0.11 |
| October | 0.37 | 0.29 | 0.15 |
| November | 0.67 | 0.53 | 0.25 |
| December | 0.60 | 0.37 | 0.19 |
| Yearly average— | |||
| 1949 | 0.31 | 0.31 | 0.17 |
| 1948 | 0.30 | 0.36 | 0.10 |
| 1947 | 0.36 | 0.35 | 0.13 |
| 1946 | 0.48 | 032 | 0.09 |