Air quality -- Determination of the uncertainty of the time average of air quality measurements
ISO 11222:2002 is only applicable if
- the set of air quality data used to calculate the time average is representative of the temporal structure of the measurand over the defined time period,
- appropriate information on the uncertainty of the measurement results is available, and
- the measurement results have all been obtained at the same location.
ISO 11222:2002 implements recommendations of the Guide to the Expression of Uncertainty in Measurement (GUM).