Aspose.Cells can be used to apply ConsolidationFunction to data fields (or value fields) of the pivot table. In Microsoft Excel, you can right-click the value field and then select Value Field Settings… option and then select the tab Summarize Values By. From there, you can select any ConsolidationFunction of your choice like Sum, Count, Average, Max, Min, Product, Distinct Count, etc.
Aspose.Cells provides ConsolidationFunction enumeration to support the following consolidation functions.
Applying ConsolidationFunction to Data Fields of Pivot Table
The following code applies AVERAGE consolidation function to the first data field (or value field) and STD_DEV consolidation function to the second data field (or value field).
Sample source file and output files can be downloaded from here for testing the sample code: