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Air Quality Statistical Tools
These flexible statistical tools are designed to allow statistical analysis of the LAQN database for up to four sites at a time. The `Air Quality Objectives` tool assesses compliance with the Government`s AQ Objectives over any twelve month period as defined by the start date. The `Air Quality Indices` tool calculates the number of days recorded in each Air Quality Index band over any period.
The `Sustainability Indicator` tool calculates the indicator value over any twelve month period. Please note that there are a number of requirements that a monitoring site must meet before a regional indicator can be compared to the National Sustainability Indicator. Visit the Sustainable Development web site for more information.
Alternatively, you can define statistics of your own. The `My own choice` tool is very flexible, allowing you to enter your own dates, averaging periods and even exceedence criteria. Give it a try and if there are any other calculations that you would find useful, please let us know and we may be able to add them.