London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Chislehurst 1963
[Report of the Medical Officer of Health for Chislehurst]
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Monthly deposit in tons per square mile during 1963.
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (in rain in inches) | 0.77 | 0.48 | 2.57 | 2.09 | 1.78 | 1.64 | 1.24 | 2.51 | 1.88 | 1.46 | 3.64 | 0.53 |
| pH Value | — | — | 6.28 | 6.68 | 6.05 | 6.95 | 7.36 | 7.15 | 6.65 | 5.84 | 5.72 | 5.63 |
| Total undissolved matter | 7.14 | 7.17 | 7.06 | 7.09 | 5.56 | 5.60 | 5.11 | 3.72 | 4.62 | 3.45 | 3.06 | 5.41 |
| Soluble in CS2 | 0.07 | 0.07 | 0.14 | 0.1 | 0.11 | 0.10 | 0.07 | 0.09 | 0.07 | 0.13 | 0.10 | 0.05 |
| Ash | 5.36 | 5.07 | 5.46 | 5.14 | 3.82 | 4.24 | 3.70 | 2.55 | 3.19 | 2.34 | 2.02 | 3.77 |
| Other combustible matter | 1.72 | 2.03 | 1.46 | 1.85 | 1.64 | 1.26 | 1.35 | 1.08 | 1.36 | 0.99 | 0.94 | 1.60 |
| Total dissolved matter | 10.94 | 9.19 | 8.86 | 8.72 | 6.44 | 6.71 | 7.32 | 5.77 | 6.34 | 5.07 | 8.05 | 6.44 |
| Ca + + | 1.58 | 1.98 | 1.16 | 1.56 | 1.04 | 1.11 | 1.77 | 0.73 | 1.03 | 0.85 | 0.83 | 0.95 |
| Cl' | 2.21 | 1.01 | 1.28 | 0.87 | 0.64 | 0.04 | 0.54 | 0.60 | 0.64 | 0.54 | 2.01 | 0.99 |
| SO," | 4.11 | 3.33 | 3.12 | 3.18 | 2.07 | 1.94 | 2.30 | 1.68 | 2.31 | 2.35 | 1.77 | 2.52 |
| Total solids | 18.08 | 16.36 | 15.92 | 15.81 | 12.01 | 12.31 | 12.43 | 9.49 | 10.96 | 8.52 | 11.11 | 11.85 |
| Sulphur dioxide (milligrams of SO, per day collected by 100 sq. cms. PbO2) .... | 4.98 | 4.40 | 1.79 | 2.29 | 1.33 | 0.46 | 0.46 | 0.63 | 1.22 | 1.25 | 1.34 | 3.15 |