Hello @paolosub,
Thank you for contacting Rank Math support.
The table is used to store the data that Rank Math fetches from Google Search Console. The more posts and data you have from GSC, the more data will be stored there.
However, you shouldn’t delete the table until you choose to turn off the Analytics module from Rank Math > Dashboard.
Since you mentioned that it is only temporary, then deleting the table could affect the Search Console integration with Rank Math. But, this can be reduced by reducing the number of days by navigating to WordPress Dashboard > Rank Math > General Settings > Analytics.
This way, you can have a smaller table size and clear the data in that table.
Please note that we always recommend creating a backup first when working with databases and making such actions.
Hope that helps.