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) | 2.01 | 0.07 | 1.86 | 1.66 | 1.10 | 0.65 | 1.80 | 0.47 | 0.005 | 2.12 | 2.82 | 3.33 |
| pH Value | 4.79 | — | 6.52 | 7.26 | 7.22 | 7.90 | 7.14 | 7.98 | — | 7.16 | 5.34 | 7.33 |
| Total water in soluble matter | 6.66 | 5.88 | 4.88 | 4.67 | 6.73 | 7.77 | 7.02 | 3.94 | 7.81 | 5.93 | 4.05 | 3.12 |
| Soluble in CS2 | 0.11 | 0.04 | 0.07 | 0.08 | 0.09 | 0.07 | 0.05 | 0.06 | 0.05 | 0.07 | 0.10 | 0.06 |
| Ash | 4.29 | 4.03 | 3.35 | 3.50 | 5.69 | 3.53 | 4.76 | 3.30 | 6.23 | 4.17 | 2.47 | 2.18 |
| Other combustible matter | 2.26 | 1.81 | 1.45 | 1.09 | 0.95 | 2.17 | 2.21 | 0.58 | 1.53 | 1.68 | 1.48 | 0.88 |
| Total water soluble matter | 8.29 | 9.98 | 7.05 | 7.05 | 10.64 | 6.43 | 6.91 | 6.11 | 11.44 | 8.26 | 7.92 | 9.13 |
| Ca + + | 0.87 | 2.18 | 1.01 | 1.21 | 2.15 | 1.34 | 1.34 | 1.21 | 1.91 | 0.94 | 1.07 | 1.07 |
| CI' | 1.41 | 0.62 | 1.01 | 0.81 | 0.70 | 0.54 | 0.67 | 0.42 | 0.92 | 1.31 | 1.61 | 1.95 |
| SO"4 | 2.74 | 5.26 | 3.16 | 3.42 | 3.74 | 2.07 | 2.77 | 1.77 | 4.13 | 2.98 | 2.49 | 3.20 |
| Total solids | 14.95 | 15.86 | 11.92 | 11.72 | 17.37 | 14.20 | 13.93 | 10.05 | 19.25 | 14.18 | 11.97 | 12.25 |
| Sulphur dioxide (milligrams of S.O.3 per day collected by 100 sq. cms. Pb.O2) | 3.42 | 3.39 | 1.27 | 1.54 | 1.23 | 0.84 | 0.86 | 0.80 | 1.32 | 1.21 | 1.46 | 1.63 |