June 2009
Front Matter
Training
20
Suggested
Analyses (4 of 4)
Prepare
annual box plots of key species to evaluate
trends
What
are the annual trends in air toxics concentrations?
•Compare trends in co-emitted pollutants
•Assess timing of controls and expected reductions relevant to local monitoring of pollutants.
How
might changes in air toxics concentrations
be related to emissions controls?
Do
air toxics concentrations change over time?
Example
Analyses
Questions