QA Analyzed Data

The data presented in files below is available for viewing or downloads and has been quality assured (QA'd).

Ozone data is the maximum 8-hour average for the day at each site.

Particle pollution data is the midnight to midnight 24-hour average for each day. Through 2013 the continuous particle pollution data had to be adjusted to the federal reference method (FRM) monitoring data. The particle pollution data presented through 2013 below is QA'd FRM-like 24-hour averages. During 2013 the monitors were changed over to FRM monitors.  So beginning in 2014 all continuous QA’d data is true FRM data.