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 Stoke Newington, The Metropolitan Borough]
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19®
Month | Mg.of SO3/day collected by 100 sq.Cm.Of Batch A Pbo2. (louvered cover) |
---|---|
January | |
February | |
March | |
April | |
May | |
June | |
July | l.0 |
August | |
September | |
October | |
November | |
December |
DAILY SMOKE FILTER - TABLE 3. (Smoke in milligrammes/100 cubic metres)
Month | Average Reading | Highest Reading | Lowest Reading |
---|---|---|---|
January | 51 | 156 | 8 |
February | 42 | 149 | 17 |
March | 23 | 58 | 3 |
April | 16 | 35 | 5 |
May | 6 | 16 | 1 |
June | 5 | 14 | 2 |
July | 4 | 11 | 1 |
August | 5 | 13 | 2 |
September | 7 | 17 | 1 |
October | 14 | 37 | 1 |
November | 30 | 125 | 3 |
December | 26 | 78 | 8 |