What it is
Everview renders data using four chart types, each suited to a different question: donut charts for proportional breakdowns at a glance, bar charts for distribution across date bands, line charts for a metric's trend over time, and streamgraphs for how effort is distributed across categories over time.
How to read it
Reach for a donut chart for a quick proportional split (for example, work item types in a sprint). Reach for a bar chart when comparing distributions across date bands. Line charts are best for watching a single metric — like velocity — trend over several iterations. Streamgraphs show how multiple categories' effort shifts relative to each other over time, which a stacked bar chart can't show as clearly. Color coding and legends are consistent across all four types within a given dashboard.
What to do about it
Don't read a single chart in isolation — Everview's charts are designed to be combined. Pair a Sankey ribbon's metrics (allocated capacity, expected progress, estimated effort, buffer) with a trend line or breakdown dashboard for a fuller picture before drawing conclusions, and cross-reference against Understanding Objectives and Metrics when a chart's trend touches an OKR you're tracking.