Retrieving Last-Run Statistics for Variables
You can use the Plant Applications Add-in to gather statistics for multiple variables from the last product run that used the variable. You can filter on a specific product, if you wish.
Before you search for run data for variables, you’ll need to have a worksheet with Variable IDs to use as input. For more information, please see Searching for Variables.
What Statistics Are Available?
You can select one or more of the following run statistics:
Run Statistic |
Definition |
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Run Start Time |
When the run starts. |
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Run End Time |
When the run ends. |
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Product Code |
An abbreviated description to identify a product. Example A brewery's product management lists 55 Brew Unit as a product family. The 55 Brew Unit product family lists a product identified as 55 Dark Ale (55 Dark). Where
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Average |
String |
Value that is in the RSum table, based on the raw count of the most commonly occurring value. |
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Float |
Average value for the run. |
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Integer |
Average value for the run. |
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Standard Deviation |
Standard deviation of the critical value (e.g. weight, length) within the last run. |
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% In Warning |
Percent of time the values for the variable were inside the warning limits during the time of the run, meaning above Lower Warning and below Upper Warning. |
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Conformance Index |
Calculated value that combines conformance to target and variation. The data quality reject features for variables and units can also be applied to the data used in the calculations. The variable reject and unit reject features apply to this data as well as to run summaries. |
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Cpk |
Process Capability Index analyzes how closely the last run was on target and how consistent it was around its average performance. The Cpk targets performance between the Upper and Lower reject limits. Note: The further apart the reject limits are, the less likely that any item will be outside those limits. Possible results in the last run include: |
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Result |
Cpk |
Cp |
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Low |
High |
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Low |
High |
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High |
High |
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Minimum |
Minimum value within the last run. |
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Maximum |
Maximum value within the last run. |
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Number of Samples |
Number of data points within the last run. |