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 Barking]
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| Black Smoke minutes | Moderate Smoke minutes | Little or No Smoke minutes | ||
|---|---|---|---|---|
| Amount of smoke recorded during the year | 163.5 | 1056.5 | 4060 | |
| Average amount of smoke recorded per observation | 0.924 | 5.969 | 22.938 | |
| Particulars of contraventions of the Byelaws (over 2 minutes in ½ hour) | 8 | 2 | 20 | |
| 5 | 7 | 18 | ||
| 5 | 21 | 4 | ||
| 7 | 9 | 14 | ||
| 3½ | 2½ | 24 | ||
| 5½ | 18 | 6½ | ||
| 4 | 26 | — | ||
| 9½ | 6½ | 14 | ||
| 6 | 24 | — | ||
| 3 | 7 | 20 | ||
| 6 | 24 | — | ||
| 4 | 3 | 23 | ||
| 24 | 3 | 24½ | ||
| 4 | 2½ | 23½ | ||
| 5 | 5 | 20 | ||
| 2½ | 3½ | 24 | ||
| 3½ | ½ | 26 | ||
| 3 | 1 | 26 | ||
| 5 | 19 | 6 | ||
| 5 | 19 | 6 | ||
| 11 | 4 | 15 | ||
| 15 | 13 | 2 | ||
| 5½ | 6½ | 18 | ||
| 4 | 21 | 5 | ||
| 3 | 10 | 17 | ||
| 8½ | 2½ | 19 | ||
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