8.7 O3 (ozone) concentration

8.7 O3 Mengun

O3 (ozone) concentration shall be calculated as the sum of daily concentrations for the whole year (numerator) divided by 365 days (denominator). The result shall be expressed as the annual average for daily O3 (ozone) concentration in μg/m3. O3 is normally monitored at 8-h intervals. To determine the 24-h average daily concentration, the three 8-h concentrations shall be determined and averaged over a 24-h period at all monitoring stations within the city’s boundaries.

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iso37120-2018:__8.7_o3_(ozone)_concentration_9450