Air pollution
Average air pollution readings in central Christchurch for the 24 hours ended » a.m. yesterday and for the previous 24 hours In micrograms per cubic metre were:— SATURDAY Sulphur dioxide: 44, low. Smoke: 28, low. Nitrogen oxides: 31, low. SUNDAY Sulphur dioxide: 27, low. Smoke: 21, low. Nitrogen oxides: 22. low. Levels are: Less than 80 micrograms, low; 80 to 250, medium; more than 250, high.
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https://paperspast.natlib.govt.nz/newspapers/CHP19730618.2.94
Bibliographic details
Press, Volume CXIII, Issue 33254, 18 June 1973, Page 12
Word Count
67Air pollution Press, Volume CXIII, Issue 33254, 18 June 1973, Page 12
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Acknowledgements
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