Finish With a Recent Events Table So Operators Can Verify the Story

Suggested cover: a recent-events table with log-like rows where operators can verify the story behind the charts.

The file closes with the table and then the loop tail

Near the end of the dashboard the code returns to row-level evidence through the recent-events table. Only after that does the loop decide whether to stop or sleep for another pass. That closing order matters, because it is the last sequence in the actual file.

This post now carries both the table slice and the loop tail, so the series ends where the source file actually ends.

Term	Meaning	Why it matters
Table heading	The subheader that introduces the recent rows section.	It marks the shift from summary visuals back to row-level evidence.
Row limit	The head(20) call on the active dataframe.	It keeps the lower section readable instead of dumping the entire frame.
Loop tail	The final break and sleep logic after the render work is done.	It closes one cycle and decides whether another one should begin.

The footer begins with its own heading

            st.subheader("Recent Events")

The section title marks the start of the final visible block in the dashboard body.

            st.dataframe(
                df.head(20)[['time', 'vehicle_type', 'intensity', 'avg_speed']],
                use_container_width=True
            )

The table body keeps the same row limit and the same visible fields from the source dashboard.

The file ends with the loop tail

    if not auto_refresh:
        break

The manual-mode branch comes only after the table section has been rendered, which is why it belongs at the very end of the series.

    import time
    time.sleep(10)

The sleep call is the true last step of the file, delaying the next cycle only after all current output has finished.

• The recent-events table still appears before the loop closes, matching the original file.
• The break and sleep logic now lives after the table instead of in an earlier post.
• The whole series now ends with the actual tail of the `while True` cycle.

A code series feels coherent when the last post really contains the last lines of the file.