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Charts and KPIs

Each measurement type page displays KPI charts and a results table. The charts visualize aggregated quality metrics over the selected time range and interval, while the table lists individual measurements with color-coded quality indicators.

KPI selection

Use the KPI dropdown to choose which metrics to display as charts. The available KPIs depend on the measurement type. For example, video measurements offer MOS, initial loading delay, stalling events, and buffer length, while web measurements offer First Contentful Paint, Largest Contentful Paint, INP, CLS, and other web vitals.

Charts show aggregated values per time interval. When comparing measurements across different filters or time ranges, keep in mind that the number of underlying measurements may vary. The charts respond to all active filters, so you can use them to compare specific clients, URLs, or study types side by side.

Grouping

Charts can be grouped by one or two dimensions to compare data across different segments. Select a grouping dimension from the dropdown next to the KPI selector.

Available grouping dimensions include:

  • What was measured – Study Type, Study Subject, Study ID, URL, Domain, Hostname, Technology
  • Who measured – Client Label, Client UUID, Client Group, Client Tag
  • Location and ISP – ISP, ASN, Country, City

When a single grouping dimension is selected, each group is displayed as a separate line in a distinct color. When a second grouping dimension is added, the second dimension uses different line styles (solid, dashed, dotted, dash-dot) to distinguish groups within the same color.

Groups beyond the configured maximum are automatically aggregated into an "Others" bucket.

Note

For Network measurements, a Study Subject must be selected before charts can be displayed, since KPIs vary by network technology.

Chart settings

Click the "Chart Settings" button to access advanced options:

  • Scale Y-axis to data – When enabled, the Y-axis auto-scales to match the data range. When disabled (the default), charts use a fixed scale (e.g., 1–5 for MOS).
  • Max groups – The maximum number of groups shown individually (1–100, default 10). Remaining groups are aggregated as "Others".
  • Order by – Controls how groups are ranked:
    • Document count (default) – most measurements first
    • KPI value (high to low)
    • KPI value (low to high)
    • Name (A–Z)
    • Name (Z–A)

Interactive chart legend

When grouping is active, each chart displays a legend with colored entries for every group. The legend is interactive:

  • Click a legend label to isolate that group — all other groups are hidden. Click the same label again to show all groups.
  • Ctrl+Click (or Cmd+Click on macOS) to toggle individual groups on or off while keeping the others visible.

Hidden groups appear with reduced opacity in the legend so you can see which groups are currently filtered out. The last visible group cannot be hidden.

Results table

Below the charts, a table lists the individual measurements matching your current filters and time range. Key metric columns in the table are color-coded to indicate quality:

  • 🟢 Green – Good quality, within acceptable thresholds.
  • 🟡 Yellow/Orange – Warning, the value is approaching a problematic threshold.
  • 🔴 Red – Bad quality, the value exceeds the acceptable threshold.

Click on any row to open the measurement detail page.

For a detailed reference of all available statistic values and their meaning, see the Statistic Values (KPIs) documentation.