Time plot of minimum, maximum and average WIP per time period defined by Time unit for the selected region of the value stream. The blue line shows the average WIP and the orange area shows envelope formed by the corresponding maximum and minimum WIP in each time period. The average WIP is calculated as the time-weighted average, which means the total time spent by all the cards in the selected region of the value-stream (column) normalized by the time unit.

Note: WIP chart is not sensitive to card attribute based filter elements.

Flow Deficit

Flow deficit combines multiple charts together to provide a comprehensive visualization of flow. The in-flow is shown above the x-axis using green bars, the out-flow is shown below the x-axis using blue bars, and the cumulative difference between the in-flow and the out-flow is shown in the shaded orange area behind the bar charts. The cumulative difference at the beginning of the time interval is initialized to 0, thus allowing us to visualize the change in WIP during the selected interval.

Note: The Flow Deficit shown here is different from Flow Debt defined in the book Actionable Agile Metrics for Predictability by Daniel Vacanti. A brief introduction to flow Debt is also provided in What is flow debt by Andy Carmichael.

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