Timesheet Report provides a timesheet table and a view of the worklogs in a structured form, summarized by Project, Issue and User. You can drill down on each level simply clicking on the rows on the left side of the table.
The display and hierarchy of the worklogs will depend on the selected group by option.
Display in the columns:
The table will first show only the data of the top level you have set. If you click on one of the rows (project, issue, user), it will drill down to the next level and display its data and worklogs.
For example:
You can export the summarized data from this sub-page to Excel or CSV file.
The Export button will display a dialog where you can select the logged time export format where you can select the time format that appears in the exported reports: