The above index is for overall Air Quality in Zone C and not just at this station. The index is calculated based on the latest available measurements of ozone, nitrogen dioxide, PM10 and sulphur dioxide in Zone C.
The Sligo site was located in the car park in front of the Regional Hospital overlooking the town. Monitoring was done by a mobile unit containing continuous monitors for sulphur dioxide, nitrogen oxides, carbon monoxide and benzene. Continuous samples were also taken for particulates (PM10) and lead.
Hourly averages were produced for the gases while the particulate and lead samples were taken away for laboratory analysis every three weeks.
Results were collected from 21/01/2003 to 02/10/2003 and compared with the assessment thresholds in the Air Quality Regulations to determine the type of monitoring required long term.
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