# A week in the observatory

*An illustrated log · Sample data*

Two series tell the story of a week: the observations planned, and the observations completed. The line and bars share the same scale.

```mermaid
xychart-beta
    title "Observations by night"
    x-axis [Mon, Tue, Wed, Thu, Fri, Sat, Sun]
    y-axis "Observations" 0 --> 40
    bar [12, 24, 18, 32, 28, 36, 30]
    line [16, 24, 24, 32, 32, 36, 36]
```

**Bars:** completed observations. **Line:** planned observations.

## Keep the detail beside the chart

| Night | Completed |
| :--- | ---: |
| Mon | 12 |
| Wed | 18 |
| Fri | 28 |
| Sun | 30 |

These are illustrative values, not observations from a real telescope. The Markdown contains every label and value used in the chart.