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
Hackney 1957
[Report of the Medical Officer of Health for Hackney]
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Table II: Cpncentration of smoke, and Sulphur Dioxide by the Volumetric Method
| Jan. | Feb. | Mar. | Apr. | May. | June. | July. | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Monthly Average | 48 | 61 | 46 | 25 | 15 | 9 | 6 | 38 | 43 | 78 | ||
| Highest Daily Average | 102 | 111 | 114 | 70 | 30 | 21 | 11 | 111 | 121 | 345 | ||
| Monthly Average | 10 | 13 | 11 | 8 | 5 | 4 | 2 | - | - | 9 | 10 | 20 |
| Highest Daily Average | 23 | 31 | 30 | 23 | 10 | 8 | 4 | - | - | 22 | 26 | 82 |
| Monthly Average | 58 | 78 | 67 | 40 | 26 | 17 | 18 | 24 | 34 | 74 | 64 | 69 |
| Highest Daily Average | 128 | 165 | 119 | 99 | 68 | 72 | 41 | 58 | 116 | 139 | 116 | 281 |
| Monthly Average | 6 | 10 | 9 | 8 | 6 | 5 | 5 | 4 | 5 | 7 | 7 | 16 |
| Highest Daily Average | 15 | 24 | 24 | 17 | 11 | 12 | 8 | 11 | 9 | 13 | 18 | 78 |
| Monthly Average | 55 | 65 | 54 | 28 | 21 | 11 | 9 | 15 | 20 | 45 | 51 | 66 |
| Highest Daily Average | 123 | 120 | 99 | 103 | 46 | 35 | 22 | 42 | 39 | 111 | 91 | 255 |
| Monthly Average | 6 | 9 | 9 | 6 | 3 | 3 | 2 | 2 | 2 | 4 | 5 | 11 |
| Highest Daily Average | 16 | 19 | 22 | 23 | 7 | 6 | 3 | 4 | 4 | 8 | 13 | 50 |
Figures for Smoke are expressed in "milligrams per 100 cubic metres", for Sulphur Dioxide in "parts per 100 million parts of air".