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 1962
[Report of the Medical Officer of Health for Chislehurst]
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Sidcap County Primary R.C. School.
Monthly deposit in tons per square mile during 1962.
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (in rain in inches) | 2.79 | 0.39 | 1.50 | 1.72 | 2.01 | 0.30 | 2.01 | 1.34 | 2.72 | 1.17 | 1.58 | 1.53 |
| pH Value | 5.38 | 6.04 | 6.66 | 6.60 | 6.61 | — | 6.89 | 7.22 | 6.86 | 6.52 | GAUGE TAMPERED WITH | 4.55 |
| Total undissolved matter | 5.58 | 4.34 | 7.58 | 5.54 | 6.32 | 8.01 | 10.29 | 5.18 | 3.70 | 8.32 | 6.63 | |
| Soluble in CS, ........ | 0.12 | 0.13 | 0.08 | 0.08 | 0.07 | 0.05 | 0.18 | 0.07 | 0.08 | 0.11 | 0.15 | |
| Ash | 3.88 | 3.11 | 5.61 | 3.90 | 4.33 | 5.94 | 5.59 | 3.52 | 2.61 | 5.22 | 5.02 | |
| Other combustible matter | 1.59 | 1.10 | 1.89 | 1.56 | 1.92 | 2.02 | 4.51 | 1.59 | 1.01 | 2.99 | 1.46 | |
| Total dissolved matter | 8.46 | 4.38 | 7.95 | 6.55 | 4.70 | 5.54 | 9.60 | 6.21 | 6.04 | 12.52 | 10.57 | |
| Ca+ + | 0.72 | 0.67 | 1.61 | 1.00 | 0.73 | 1.38 | 1.60 | 0.91 | 0.62 | 2.65 | 0.89 | |
| CI' | 2.42 | 0.94 | 0.97 | 0.84 | 0.67 | 0.44 | 0.87 | 0.71 | 0.47 | 1.28 | 1.31 | |
| SO." | 2.16 | 1.28 | 2.85 | 2.52 | 2.34 | 1.64 | 2.27 | 1.27 | 2.00 | 5.64 | 2.92 | |
| Total solids | 14.04 | 8.72 | 15.53 | 12.09 | 11.01 | 13.55 | 19.89 | 11.38 | 9.74 | 20.84 | 17.20 | |
| Sulphur dioxide (milligrams of S03 per day collected by 100 sq. cms. PbO,) | 1.67 | 3.02 | 2.51 | 1.92 | 1.21 | 0.93 | 1.23 | 0.55 | 0.86 | 2.22 | 2.58 | 3.58 |