|Correlation co-efficient (R2)||0.89|
|AQMesh processing algorithm||V4.2.3|
|Averaged sample interval||1 hour|
All comparison trials are from regularly maintained reference stations. Not all are specifically identified due to the administrative overhead of getting permission to name data sources. We do not always use ratified reference data to avoid delays in analysis but re-running the comparison analysis after data ratification often improves correlation.