That is 1 in 4, cancel of 2 Environmental Committee announcement of a national issue 10 (2535 (1992)) air quality standards matters in General, and use the following instead."(4) The average value of the sulphur dioxide in the 24-hour period must not exceed 0.12 parts in a million or less than 0.3 mg per cubic meter, and the arithmetic mean (Arithmetic Mean) in 1-year time must not exceed 0.04 parts in a million or less than 0.10 mg per cubic meter, "he said.
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