This page lists peak and average measurements in table format. Each monitor is identified by a number, and more than one row of information may be given for each monitor. Data collected by quality assurance monitors is, at times, also listed. The years listed on the Annual Report Summary page are hot links to the Hourly Raw Data page, from which you can retrieve data collected on one day or a range of days up to one month. You can download the data tables generated in a text file.
Raw data are only available for the most recent five years.
Annual summaries are available back to 1982.