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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21.
LEAD PEROXIDE APPARATUS - TABLE 2 (Readings taken at Tow Hall, N. 16. )
| Month | Mg.of SO3/day collected by 100 sq.cm. of Batch A Pbo2. (louvered cover) |
|---|---|
| January | 3.01 |
| February | 2. 66 |
| March | 2.40 |
| April | 1.92 |
| May | 0.92 |
| June | 0.88 |
| July | 0.64 |
| August | 0.74 |
| September | 1.06 |
| October | 1.59 |
| November | 2.70 |
| December | 3.17 |
DAILY SMOKE FILTER - TABLE 3 (Smoke in microgrammes per cubic metre)
| Month | Average Reading | Highest Reading | Lowest Reading | |
|---|---|---|---|---|
| (a) | January | 260 | 730 | 10 |
| February | 200 | 370 | 60 | |
| March | 220 | 500 | 60 | |
| April | 100 | 260 | 30 | |
| May | 50 | 140 | 20 | |
| June | 70 | 350 | 20 | |
| July | No Readings Taken | |||
| (b) | August | 31 | 70 | 10 |
| September | 68 | 210 | 30 | |
| October | 105 | 345 | 30 | |
| November | 370 | 1,020 | 40 | |
| December | 510 | 1,380 | 70 | |