Time Average

[nightdesigns]

My script tracks how long it takes to run a particular script. I want to take an average of all of these times. I have a calc field that automatically subtracts end time from start time for the duration. I've created a summary field that takes the average of all the shown durations, and have placed the result in the footer of the body, however, It doesn't show the average, it shows another, much larger number. What obvious thing am I missing.

[transpower]

If you put the summary field in the body of the format, do you get the correct result?