# SPC data in report

**URL:** <https://forum.inductiveautomation.com/t/spc-data-in-report/14255>\
**Category:** Ignition\
**Created:** [May 10, 2017, 2:57pm UTC](https://forum.inductiveautomation.com/t/spc-data-in-report/14255 "2017-05-10T14:57:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![AJBerera](https://avatars.discourse-cdn.com/v4/letter/a/9fc29f/32.png) [@AJBerera](https://forum.inductiveautomation.com/u/AJBerera)\
**Post date:** [May 10, 2017, 2:57pm UTC](https://forum.inductiveautomation.com/t/spc-data-in-report/14255/1 "2017-05-10T14:57:28Z")

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Hi,

I’m trying to figure out how to use report parameters (Setpoint tags) to make a Cp calculation. I have the std deviation between a start point and end point, now I would like to use a formula, lets say (HiSP - LoSP) / (6 \* stdDev) for the run.  
Is there a good way to do this inside the report designer? Could I display those values on something like a spider plot? Even another column in my tag\_calc table would be good enough. If some one has an idea, please do tell. Ignition 7.9.1.

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**Author:** ![adam.morales](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/adam.morales/32/3405_2.png) [@adam.morales](https://forum.inductiveautomation.com/u/adam.morales)\
**Post date:** [May 11, 2017, 11:16pm UTC](https://forum.inductiveautomation.com/t/spc-data-in-report/14255/2 "2017-05-11T23:16:29Z")

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You can perform math operations on report parameters inside of any text box, including table fields. Assuming that all of those parameters are defined, you can do something like @(HiSP - LoSP) / (6 \* stdDev)@ in order to show that calculated value.