# Easy Chart to sum hourly data

**URL:** <https://forum.inductiveautomation.com/t/easy-chart-to-sum-hourly-data/83177>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [December 15, 2023, 3:25am UTC](https://forum.inductiveautomation.com/t/easy-chart-to-sum-hourly-data/83177 "2023-12-15T03:25:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![770043297](https://avatars.discourse-cdn.com/v4/letter/7/b9bd4f/32.png) [@770043297](https://forum.inductiveautomation.com/u/770043297)\
**Post date:** [December 15, 2023, 3:25am UTC](https://forum.inductiveautomation.com/t/easy-chart-to-sum-hourly-data/83177/1 "2023-12-15T03:25:21Z")

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I have a cumulative figure that continues to rise, and I want to count the hourly cumulative figure over a period of time  
This is how I do it  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/e/9eeb470a4a478de5c0fb4dff92e9e570d91f2385.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/3/f3039cde1792284453603d545157c3a473db9044.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/5/c56d33a4e6d5c5c5721010b9959914c7e5c91d11.png)  
Resolution=1 (sum=100) data is correct, Resolution=15 (sum = 85) is obviously less, I wonder if the Range does not include the boundary value of the previous one

sincere regards