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 Southall]
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Atmospheric Pollution Estimation
Month of Year | Sulphur Compounds by the Lead Dioxide Method, as Milligrams S03 per day per 100 sq. cm. | |||
---|---|---|---|---|
Recreation Ground | Railway Allotments | |||
1961 | 1962 | 1961 | 1962 | |
January | 2.29 | — | 2.69 | 3.27 |
February | 1.99 | 2.12 | 2.89 | 2.33 |
March | 2.26 | 2.51 | 2.58 | 2.51 |
April | 1.68 | 1.25 | 2.76 | 1.28 |
May | 0.97 | 0.84 | 1.36 | 1.22 |
June | 0.83 | 0.86 | 1.07 | 1.13 |
July | 109 | 0.74 | 0.80 | 1.18 |
August | 0.69 | 0.47 | 103 | 0.99 |
September | 1.26 | 1.44 | 2.46 | 1.12 |
October | 119 | 1.95 | 2.33 | 2.36 |
November | 2.73 | 2.43 | 2.67 | 2.27 |
December | 3.32 | — | 3.41 | 3.48 |
Average for year | 1.69 | 1.46 | 2.17 | 1.93 |