Answer: The total number of hours logged into all projects each day.
Explanation:

       1. Daily Totals:
             * The numbers show the total hours logged for each day.
       2. All Projects Combined:

             * They represent hours summed across all tasks and projects for that day.
       3. Quick Overview:

             * Helps users quickly see how many hours they worked each day.
       4. Displayed in Timesheet Grid:

             * Found at the bottom of each date column in the weekly timesheet view.
       5. Useful for Validation:

             *Helps ensure daily time targets (e.g., 8 hours/day) are met.