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) | .067 | 0.51 | 2.49 | 1.94 | 1.59 | 1.61 | 1.10 | 2.33 | 2.17 | 1.38 | 3.46 | 0.49 |
| pH Value | — | — | 6.18 | 6.90 | 5.83 | 6.82 | 7.42 | 7.27 | 6.98 | 6.10 | 6.32 | 6.08 |
| Total undissolved matter | 8.76 | 7.08 | 4.19 | 6.27 | 5.95 | 4.63 | 3.76 | 3.14 | 3.25 | 2.63 | 2.65 | 5.62 |
| Soluble in CS2 | 0.09 | 0.09 | 0.09 | 0.09 | 0.07 | 0.06 | 0.03 | 0.05 | 0.03 | 0.08 | 0.12 | 0.07 |
| Ash | 6.67 | 5.26 | 3.01 | 4.65 | 4.17 | 3.39 | 2.79 | 2.26 | 2.69 | 1.79 | 1.24 | 4.27 |
| Other combustible matter | 2.01 | 1.74 | 1.10 | 1.54 | 1.71 | 1.18 | 0.93 | 0.83 | 0.53 | 0.76 | 1.28 | 1.28 |
| Total dissolved matter | 15.53 | 8.63 | 5.40 | 9.61 | 6.58 | 5.14 | 5.86 | 5.73 | 5.46 | 3.49 | 4.74 | 6.65 |
| Ca + + | 2.57 | 1.85 | 0.73 | 2.20 | 0.93 | 0.83 | 1.49 | 0.75 | 1.19 | 0.58 | 0.67 | 1.30 |
| cr | 2.60 | 0.86 | 0.99 | 0.79 | 0.99 | 0.40 | 0.36 | 0.66 | 0.66 | 0.40 | 1.71 | 0.92 |
| SO4" | 6.79 | 3.44 | 1.79 | 3.47 | 1.89 | 1.72 | 1.90 | 1.52 | 2.33 | 1.22 | 1.95 | 2.91 |
| Total solids | 24.30 | 15.71 | 9.59 | 15.88 | 12.53 | 9.77 | 9.62 | 8.87 | 8.71 | 6.12 | 7.39 | 12.27 |
| Sulphur dioxide (milligrams of SO2 per day collected by 100 sq. cms. PbO2) | Gauge discontinued | |||||||||||