FR: Averaged usage monitoring

Current behavior: The monitor updates every second, showing data that varies significantly, making it difficult for users to track and comprehend changes in real time.

Proposed feature: Implement an option to display the average values over a user-defined time interval, such as every 5 or 10 seconds. This would help users better understand trends and fluctuations without the need to process rapidly changing data moment-to-moment. Having a smoothing option can enhance user experience by providing clearer and more actionable insights.

Start by locating the monitor's one-second update loop and the code that presents its changing values. Define the averaging interval and confirm that the monitor displays averaged values over the selected period, including the proposed 5- and 10-second examples.

Written by the indexing model from the issue text.