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 1959
[Report of the Medical Officer of Health for Chislehurst]
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Monthly deposit in tons per square mile during 1959.
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (in rain in inches) | 1.88 | 0.05 | 2.04 | 1.67 | 1.03 | 0.51 | 1.27 | 0.49 | 0.015 | 1.80 | 2.42 | 3.31 |
| pH Value | 4.77 | — | 5.37 | 6.37 | 7.28 | 7.95 | 7.21 | 7.90 | — | 7.12 | 4.88 | 6.34 |
| Total water in soluble matter | 7.11 | 5.26 | 4.70 | 4.72 | 8.62 | 8.65 | 7.01 | 4.66 | 8.55 | 5.96 | 3.55 | 2.95 |
| Soluble in CS2 | 0.17 | 0.08 | 0.09 | 0.11 | 0.08 | 0.07 | 0.05 | 0.06 | 0.05 | 0.09 | 0.09 | 0.06 |
| Ash | 4.91 | 3.64 | 3.29 | 3.32 | 6.92 | 6.51 | 5.07 | 3.40 | 6.79 | 4.32 | 2.27 | 1.98 |
| Other combustible matter | 2.03 | 1.54 | 1.38 | 1.29 | 1.61 | 2.06 | 1.89 | 1.21 | 1.71 | 1.55 | 1.19 | 0.91 |
| Total water Soluble matter | 6.91 | 7.77 | 6.41 | 6.14 | 9.75 | 6.23 | 5.77 | 6.16 | 8.12 | 7.99 | 6.31 | 6.78 |
| Ca + + | 0.81 | 1.64 | 1.34 | 0.87 | 2.08 | 1.34 | 1.21 | 1.28 | 1.41 | 1.34 | 0.67 | 0.67 |
| CI' | 1.34 | 0.65 | 0.87 | 0.81 | 0.65 | 0.54 | 0.60 | 0.44 | 0.72 | 1.17 | 1.54 | 2.01 |
| SO"4 | 2.38 | 4.15 | 2.57 | 2.49 | 3.68 | 2.11 | 2.32 | 2.04 | 2.90 | 2.82 | 1.38 | 2.49 |
| Total solids | 14.03 | 13.03 | 11.11 | 10.86 | 18.37 | 14.87 | 12.87 | 10.82 | 16.68 | 13.95 | 9.86 | 9.73 |
| Sulphur dioxide (milligrams of S.O.3 per day collected by 100 sq. cms. Pb.O2) | 4.34 | 3.42 | 1.88 | 1.94 | 1.75 | 1.16 | 0.98 | 1.35 | 1.49 | 1.93 | 2.11 | 2.08 |