Start with your observations
Enter one value for every hour of every day. Use one unit throughout the week so the pattern stays comparable.
Zero means you observed no traffic in that hour. It is not treated as a missing value.
Read the suggested window
Formula v1 searches each day separately for the shortest continuous window that covers its target share of observed traffic.
Treat the result as a prompt for inspection. Your staffing, travel, and other operating constraints remain outside this calculation.
Recalculate when the inputs change
Editing any value clears the previous result. Calculate again so the displayed window always matches the current matrix.