Unknown usage from one of my database

I need support help.

For more than 2 weeks, i didn't make any requests to my database, but I have noticed huge amount of reads and writes requests: Around 8000 reads and exactly 123 writes every days.
On my only project page, the number or requests is shown as 1 requests from October 15th.

I have no programs running that could make so much requests.

And my tables database (and number of rows) never change this month.

I also have a function with executions that i have never user this month.

I never put my credentials online to test the database. Only local computer executions, and many weeks ago.

I have joined some images.

Unknown usage from one of my database

It's not 8000 each day. It's total 8000 reads

Hi Steven,
Thank you for the answer. I understand, but it's confusing then. Because each bar of the bar graph shows each date of the month. But i understand it is the cumulative reads for the month.
I guess it is to keep the same graphical scale.