# Issue - "Visitors" metric collected from Piwik to Looker Studio

**URL:** <https://community.piwik.pro/t/issue-visitors-metric-collected-from-piwik-to-looker-studio/4178>\
**Category:** Reports and working with data\
**Created:** [July 5, 2024, 12:48pm UTC](https://community.piwik.pro/t/issue-visitors-metric-collected-from-piwik-to-looker-studio/4178 "2024-07-05T12:48:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Arthur](https://dub1.discourse-cdn.com/flex005/user_avatar/community.piwik.pro/arthur/32/3265_2.png) [@Arthur](https://community.piwik.pro/u/Arthur)\
**Post date:** [July 5, 2024, 12:48pm UTC](https://community.piwik.pro/t/issue-visitors-metric-collected-from-piwik-to-looker-studio/4178/1 "2024-07-05T12:48:18Z")

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Hi,

I’m working on a Looker Studio for a client and collecting data from my Piwik Pro client account.

The issue is that I have differences between data collected by month and the grand total line for visitors.

Here is an example:

 ![image](https://europe1.discourse-cdn.com/flex005/uploads/piwikpro/original/2X/5/56dea082b9caf9b53bb0cff39b0d6a86b229de60.png)

Can you please give an explanation about how this metric is calculated?

For your information, I collected 89,615 visitors in Piwik Pro during the same period for every report.

Best regards,

Arthur

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**Author:** ![anthonybartczak](https://dub1.discourse-cdn.com/flex005/user_avatar/community.piwik.pro/anthonybartczak/32/2430_2.png) [@anthonybartczak](https://community.piwik.pro/u/anthonybartczak)\
**Post date:** [July 9, 2024, 8:34am UTC](https://community.piwik.pro/t/issue-visitors-metric-collected-from-piwik-to-looker-studio/4178/2 "2024-07-09T08:34:23Z")

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Hi @Arthur!

Could you check what’s your Looker Studio connector version?

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<div class="post-metadata">

**Author:** ![system](https://europe1.discourse-cdn.com/flex005/uploads/piwikpro/original/1X/db7013c4fd6a24443b339309db52f14995207737.png) [@system](https://community.piwik.pro/u/system)\
**Post date:** [July 23, 2024, 8:34am UTC](https://community.piwik.pro/t/issue-visitors-metric-collected-from-piwik-to-looker-studio/4178/3 "2024-07-23T08:34:26Z")

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