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Conversion Factors Between ppb and µg m-3 and ... - UK-AIR

WHO. 25oC and 1013mb. Ozone. 1 ppb = 1.9957 µg m-3. 1 ppb = 1.96 µg m-3. Nitrogen dioxide. 1 ppb = 1.9125 µg m-3. 1 ppb = 1.88 µg m-3. Carbon monoxide.

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