Analyzing Sensor Measurementsc

Use the Time-Series Chart on the History tab to review measurements over time. To open it, go to Sensors, select a sensor, and click History.

The chart shows how selected measurements changed during a specified period. Its controls are located directly above the graph.

1. Select parameters. Click the first dropdown above the chart (for example, Temperature). Select one or two parameters to display. The available options depend on the sensor model.
2. Set the date range. Click the date-and-time field, choose the start and end of the period, and confirm the selection if prompted. You can select available sensor history up to one year.
3. Choose a time interval. Open the next dropdown (for example, By 15 minutes) and select how readings should be grouped over time.
4. Choose an aggregation type. Open the final dropdown (for example, Avg) and select how multiple numerical readings within each interval should be summarized. Avg shows their average.
5. Review the chart. It updates based on your selections; no page reload is needed.

Reading the chart: The bottom axis shows time. The vertical axis shows the measurement values and units. Hover over a plotted point to inspect its reading and timestamp. Gaps indicate periods without valid measurements.

Comparing two parameters: Select two parameters in step 1. Both appear on the same chart, with separate vertical axes when needed—for example, Temperature (°C) on the left and Humidity (%) on the right. The legend below the chart identifies each parameter. Both use the same date range, time interval, and aggregation settings.

Time-Series Chart 1	Time-Series Chart 2

1. Click the Settings (gear) icon in the upper-right corner of the chart.
2. Adjust the available display options, such as showing configured threshold lines or Connect points across gaps.
3. Close or apply the settings as indicated by the menu.

Connect points across gaps draws a line between available measurements even when readings are missing. It does not add or restore missing data. Threshold lines are shown only for parameters with configured thresholds. A refresh interval control may also be available in the chart settings.

For missing or incomplete readings, see If measurements are missing.

See also: Sensor History: Overview and Summary and Viewing and Exporting Historical Data.