Preliminary 2007 Year-to-date Ozone Data

The summary data for the year so far includes

• Exceedances of the 8-hour ozone standard
• Exceedances of the 1-hour ozone standard

This exceedance information gives the date, location, and measured concentration for each time pollutant levels went above these health standards.

The data are preliminary and subject to change as they undergo validation.

Data for previous years are also available. Other data are available by contacting us for printed reports or through U.S. EPA's AIRS database.

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