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 Poplar, Metropolitan Borough]
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TABLE VII
ATMOSPHERIC POLLUTION RECORDING TABLE
CONSTITUENTS | JANUARY | FEBRUARY | MARCH | APRIL | MAY | JUNE | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
WATER | 46.98 mm. rain | 1.85 in. rain | 54.48 mm. rain | 2.15 in. rain | 1.58 mm. rain | 0.06 in. rain | 44.40 mm. rain | 1.75 in. rain | 23 mm. rain | 0.92 in. rain | 29 mm. rain | 1.16 in rain |
Grains per 100 sq. metres | Tbns per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | |
Total Water — Insoluble Matter | 901 | 22.99 | 601 | 15.34 | 241 | 6.14 | 708 | 18.05 | 342 | 8.73 | 407 | 10.37 |
Soluble in CS2 | 9 | 0.23 | 9 | 0.23 | 1 | 0.03 | 7 | 0.17 | 3 | 0.07 | 8 | 0. 20 |
Ash | 761 | 19.40 | 457 | 11.64 | 176 | 4.50 | 604 | 15.40 | 282 | 7.18 | 336 | 8.56 |
Other Combustible Matter | 132 | 3.36 | 136 | 3.46 | 63 | 1.61 | 97 | 2.48 | 58 | 1.48 | 63 | 1.61 |
Total Water — Soluble Matter | 376 | 9.60 | 328 | 8.36 | 170 | 4.33 | 355 | 9.06 | 165 | 4.19 | 147 | 3.76 |
Ca++ | 45 | L 14 | 38 | 0.97 | 29 | 0.74 | 45 | 1. 14 | 26 | 0. 67 | 29 | 0.74 |
Cl' | 43 | 1.11 | 49 | 1.24 | 18 | 0.47 | 34 | 0.87 | 20 | 0.50 | 17 | 0.44 |
so"4 | 118 | 3.02 | 132 | 3.36 | 57 | 1.44 | 133 | 3.39 | 59 | 1.51 | 62 | 1.58 |
TOTAL SOLIDS | 1277 | 32.59 | 929 | 23.70 | 411 | 10.47 | 1063 | 27.11 | 507 | 12.92 | 554 | 14.13 |
Wt. of fl9 SO3 collected estimated on mg/100 sq. cm./ day. (PbO2cylinder) | 3.83 | 3.46 | 3.41 | 2.88 | 1.71 | 1.60 |