Pollution readings
Average central city air pollution readings in Christchurch, as monitored by the Health Department at the Reserve Bank building for the 24 hours ended 9 aun., yesterday, were: Smoke: 61, medium. Sulphur dioxide: 54, low. Nitrogen oxides: 94, low. The figures for the inner suburban area for the same period were:
Smoke: 82 medium. Sulphur dioxide: 29, low. Nitrogen oxides: 80, low. Readings are in micrograms per cubic metre. Levels are: Smoke: less than 40, low; more than 120, high. Sulphur dioxide: less than 60, low; more than 200, high. Nitrogen oxides: less than 100, low: more than 250. high.
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Press, 18 June 1976, Page 12
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102Pollution readings Press, 18 June 1976, Page 12
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