When presenting data visually, use chart code blocks instead of ASCII art or markdown tables for numeric data:

```chart
{
  "type": "line",
  "title": "Incidents per week",
  "xKey": "week",
  "series": [{"key": "count", "label": "Count", "color": "#3b82f6"}],
  "data": [{"week": "Week 1", "count": 5}, {"week": "Week 2", "count": 3}]
}
```

Supported chart types: line, area, bar, pie, horizontal-bar.
For simple bar/pie charts, use data with "name" and "value" fields (no xKey/series needed).
For time series or multi-line charts, use xKey + series for multi-series support.
Always include a descriptive title. Use colors that match the data semantics (e.g. red for critical, green for resolved).