# Aggregating sensor data with time stamp to save in excel

**URL:** <https://discourse.nodered.org/t/aggregating-sensor-data-with-time-stamp-to-save-in-excel/20629>\
**Category:** General\
**Created:** [20 January 2020 12:56 UTC](https://discourse.nodered.org/t/aggregating-sensor-data-with-time-stamp-to-save-in-excel/20629 "2020-01-20T12:56:58Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Andrei](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/andrei/32/10446_2.png) [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Post date:** [20 January 2020 14:41 UTC](https://discourse.nodered.org/t/aggregating-sensor-data-with-time-stamp-to-save-in-excel/20629/4 "2020-01-20T14:41:47Z")

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> [@Jonathan95](#):
>
> I have the data coming into a join node and first noticed  
> that its not displaying all 8 topics/data on the debug. is there a problem here?

Nice flow, you are doing well.

The configuration window is telling the join node to group 4 messages and so this is what you see in the debug panel. Change it to 8 and see the difference.

![r-02](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/d/5d916c35218874c00c58480545066751722f3f29.png)

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