London's Pulse: Medical Officer of Health reports 1848-1972

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London County Council 1949

[Report of the Medical Officer of Health for London County Council]

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Table 42 Sulphur Dioxide in Air, Volumetric Method Yearly averages (frequencies)Percentages of total readings of S02 above 0.2 part and below 0:1 parts per million by volume

YearBecktonCounty Hall RoofCrossness
PercentagePercentagePercentage
Above 0.2 p.p.m.Below 0.1 p.p.m.Above 0.2 p.p.m.Below 0.1 p.p.m.Above 0.2 p.p.m.Below 0.1 p.p.m.
194915611055097
1948195119460.396
194712591851094
194615571158198
19452548952097
19442550960195
19432842193
19421256_092
19411466_097
19401166198
19391461096
Average—
1945-49175513520.396
1940-441856195

Table 43 Smoke Concentration in Air Monthly Averages Black Suspended matter : Milligrammes per cubic metre

1949BecktonCounty HallCrossness
January0.490.510.22
February0.530.670.23
March0.240.230.35
April0.190.200.09
May0.200.200.12
June0. 090.170.11
July0.090.170.10
August0.170.140.10
September0.120.180.11
October0.370.290.15
November0.670.530.25
December0.600.370.19
Yearly average—
19490.310.310.17
19480.300.360.10
19470.360.350.13
19460.480320.09