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 1960
[Report of the Medical Officer of Health for Chislehurst]
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Monthly deposit in tons per square mile during 1960.
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (in rain in inches) | 1.56 | 1.41 | 1.56 | 0.39 | 1.77 | 1.19 | 3.61 | 2.80 | 4.42 | 5.17 | 3.67 | 2.88 |
| pH Value | 6.36 | 6.45 | 6.30 | 7.10 | 7.03 | 7.17 | 6.70 | 7.24 | 6.65 | 6.58 | 4.81 | 4.69 |
| Total water in soluble matter | 4.90 | 5.14 | 6.94 | 5.42 | 7.59 | 5.99 | 3.70 | 7.89 | 7.44 | 5.06 | 2.59 | 7.95 |
| Soluble in CS, | 0.06 | 0.06 | 0.08 | 0.06 | 0.10 | 0.12 | 0.14 | 0.20 | 0.12 | 0.10 | 0.08 | 0.09 |
| Ash | 3.51 | 3.64 | 5.28 | 3.88 | 5.61 | 4.30 | 2.37 | 4.15 | 4.29 | 3.44 | 1.60 | 5.63 |
| Other combustible matter | 1.34 | 1.43 | 1.58 | 1.48 | 1.87 | 1.58 | 1.18 | 3.53 | 3.03 | 1.52 | 0.90 | 2.23 |
| Total water soluble matter | 6.78 | 5.77 | 13.16 | 5.30 | 10.94 | 7.35 | 8.86 | 10.34 | 9.20 | 13.76 | 5.37 | 7.58 |
| Ca + + | 1.01 | 0.81 | 2.55 | 0.84 | 2.40 | 1.62 | 0.87 | 1.21 | 1.29 | 2.01 | 0.36 | 1.12 |
| CI' | 1.14 | 0.94 | 1.21 | 0.50 | 0.70 | 0.60 | 0.87 | 0.60 | 1.14 | 1.48 | 1.34 | 1.34 |
| SO," | 2.86 | 2.32 | 5.70 | 1.57 | 3.80 | 2.79 | 2.68 | 2.57 | 3.48 | 5.36 | 1.52 | 4.12 |
| Total solids | 11.68 | 10.91 | 20.10 | 10.72 | 18.53 | 13.34 | 12.56 | 18.22 | 16.64 | 18.82 | 7.96 | 15.53 |
| Sulphur dioxide (milligrams of S.O., per day collected by 100 sq. cms. Pb.O, | 2.45 | 1.56 | 1.92 | 1.14 | 1.35 | 1.02 | 0.41 | 0.44 | 0.87 | 1.40 | 1.24 | 2.08 |