Pollution readings
Average air pollution readings in central Christchurch, taken by the Health Department at the Reserve Bank building for the 24 hours ended 9 aun., yesterday, were: Smoke: 19, low. Sulphur dioxide: 42, low. Nitrogen oxides: 51, low. The figures tor the inner suburban area for the same period were: Smoke: 13, low. Sulphur dioxide: 17, low. There was no reading for nitrogen oxides. Readings a j 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, 7 August 1976, Page 12
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104Pollution readings Press, 7 August 1976, Page 12
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