Hi I am looking to write a calculation that will find the minimum 15 minute average concentration over a specified 12-hour period (every 06:00:00 -12 hours)

Hi I am looking to write a calculation that will find the lowest/minimum 15-minute average concentration over a 12-hour period (back from 06:00:00). I only have PI ProcessBook, not PI Vision.

I know how to find the minimum single data point over 12 hours: tagmin('tag','*','*-12h*), set to 12h interval refreshing at 06:00:00, but I want to find the lowest 15 minute average within that period.

Is there a calculation that can segment the last 12 hours from a specified time into 15 minute average intervals, then an added calculation to that to find the lowest one? Thank you!

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Community User 11 months ago +1

I think you will have to write a calculation that executes every 15 minutes to get the average, the take the min of that calculated value. I don't think a single calculation will work directly.

0 Community User 11 months ago

I think you will have to write a calculation that executes every 15 minutes to get the average, the take the min of that calculated value. I don't think a single calculation will work directly.
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0 PIEMAN 11 months ago

Thanks (Missing Content) I tried some different calculations with brackets but could not get any to work
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