The Frequency Distribution Report (Figure 4-7) provides a breakdown of concentration values that represent the Nth percentiles of a requested data set. In the example, the 95th percentile for ozone for the given time period was 46 ppb, meaning that 95% of the ozone readings were at or below 46 ppb. The report also lists minimum, maximum, means, and deviation. The report requires that percentile ranges be set up previously for a given Parameter Template (Configuration Editors> Frequency Distribution). The report cannot be run on a parameter that does not have a Parameter template and a Frequency Distribution report configuration.



Figure 4-7 Frequency Distribution Report