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 1955
[Report of the Medical Officer of Health for Hackney]
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Table II: Concentration of smoke, and Sulphur Dioxide by the Volumetric Method
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Monthly Average | 70 | 51.1 | 43 | 24 | 16 | 10 | 9 | 11 | 15 | 43 | 59 | 64 |
| Highest Daily Average | 224 | 95 | 96 | 52 | 25 | 16 | 18 | 19 | 23 | 92 | 139 | 203 |
| Monthly Average | 9.5 | 7.3 | 8 | 6 | 4 | 3 | 3 | 3 | 4 | 10 | 12 | 11 |
| Fighest Daily Average | 50.6 | 19. 6 | 18 | 12 | 6 | 6 | 6 | 5 | 6 | 23 | 45 | 33 |
| Monthly Average | 33 | 30 | 19 | 11 | 24 | 37 | 51 | 77 | 70 | |||
| Highest Daily Average | 96 | 57 | 62 | 33 | 89 | 105 | 103 | 209 | 195 | |||
| Monthly Average | 8 | 5 | 4 | 3 | 4 | 6 | 11 | 12 | 11 | |||
| Highest Daily Average | 20 | 9 | 9 | 8 | 7 | 11 | 30 | 34 | 28 | |||
| Monthly Average | 14 | 9 | 17 | 27 | 71 | 69 | 72 | |||||
| Highest Daily Average | 50 | 29 | 58 | 77 | 222 | 157 | 224 | |||||
| Monthly Average | 2 | 2 | 3 | 4 | 9 | 12 | 9 | |||||
| Highest Daily Average | 4 | 4 | 5 | 9 | 21 | 35 | 22 |
Figures for Smoke are expressed in "milligrams Der 100 cubic metres", for Sulphur Dioxide in "parts per 100 million parts of air.