The following link contains the raw data of a hypothetical library. You can use it for Pivot Table exercise in Excel.
https://drive.google.com/file/d/1F8HndGUdVqxycLxhwl-wTNfP_kQ6MDx_/view?usp=sharing
https://drive.google.com/file/d/1F8HndGUdVqxycLxhwl-wTNfP_kQ6MDx_/view?usp=sharing