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
City of Westminster 1957
[Report of the Medical Officer of Health for Westminster, City of]
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The following table gives the degree of sulphation expressed in empirical units, viz., milligrams of sulphur trioxide per day per 100 square centimetres of standard lead peroxide exposed in the standard apparatus.
| Month. | SO3 in milligram? per 100 sq. cms. per day. | ||
|---|---|---|---|
| Mayfair. | Pimlico. | Charing Cross. | |
| January | 4.36 | 7.63 | 4.03 |
| February | 4.46 | 5.08 | 4.77 |
| March | 4.07 | 4.29 | 4.40 |
| April | 3.20 | 3.50 | 2.93 |
| May | 1.74 | 2.58 | 1.78 |
| June | 1.90 | 2.32 | 2.21 |
| July | 1.31 | 2.23 | 1.87 |
| August | 1.31 | 2.09 | 1.80 |
| September | 1.46 | 1.80 | 2.31 |
| October | 3.18 | 3.10 | 3.40 |
| November | 4.30 | 5.83 | 4.72 |
| December | 3.48 | 4.61 | 3.18 |
Daily estimations were continued at the Monck Street station and the results are given below:—
| Month. | SO2p.p.m. Daily average. |
|---|---|
| January | *098 |
| February | *098 |
| March | *096 |
| April | *077 |
| May | *062 |
| June | *055 |
| July | *042 |
| August | *041 |
| September | *041 |
| October | *102 |
| November | *140 |
| December | *180 |