View report page

45
SECTION J
ATMOSPHERIC POLLUTION
The three deposit gauge and seven lead peroxide stations were
maintained during the year and, for the first time, enable
comparison with the previous annual figures.
ESTIMATION OF ATMOSPHERIC SULPHUR BY THE
LEAD PEROXIDE METHOD
The monthly figures for each station for the years 1952 and
1953 are given in the table on page 46. The average figure for the
year was 2.10 an increase of some 10% over the previous year's
average.
The stations with the highest average figure—2.29—were Town
Hall and Bashley Road; that with the highest monthly figure was
Bashley Road—3.73. The station with the lowest average—1.87—
and the lowest monthly figure—0.64 was Acacia Road.
Once again, the figures show an increase in the amount of
atmospheric sulphur in the Borough, although no station reached
the very high levels of pollution recorded during the notorious fog
of December last year.
The monthly average for all stations is shown in a graph on
page 47.
DEPOSIT GAUGES
The monthly figures for the amount of solids deposited at
the three stations is given on page 48.
Once again, the highest average figure—28.79—and the highest
monthly figure—43.69—was reached at Bashley Road, and the
lowest average figure—16.81 and lowest monthly figure—10.13 was
recorded at Kendal Avenue.
These results show an increase of some 7% over those for 1952,
but the amount of combustible material in the deposited matter
dropped from 20% of the total to 17%.
The average monthly deposit for all stations is shown in a
graph on page 47.
The table on page 48 gives the average monthly rainfall.