Viewing and Exporting Historical Data

Use the Historical Data Table on a sensor’s History tab to review measurements by time and download them as a CSV file. The table is located below the Time-Series Chart.

1. Select parameters. Open the first dropdown above the table and choose the parameters to display. Unlike the chart, the table can show more than two parameters.
2. Set the date range. Click the date-and-time field and choose the period to review (up to one year of available history).
3. Choose a time interval. Open the next dropdown (for example, Hourly) to choose how readings are grouped.
4. Choose an aggregation type. Open the Avg dropdown to choose how numeric readings are summarized. Avg means average.
5. Read the table. Each row represents a timestamp or time interval. The newest rows appear first.

The screenshots below show the table controls. Click any image to open it at full size.

• Timestamp is the first column. Other columns show the selected parameters and their units, where applicable.
• A dash (-) means no measurement is available for that parameter and interval. It does not necessarily mean the sensor is offline.
• Scroll horizontally if some columns are outside the visible area. Use pagination controls, when shown, to move through additional records.

Note: The table and chart have independent controls. Changes to the table’s parameters, date range, interval, or aggregation do not affect the chart.

1. Select the parameters, date range, time interval, and aggregation type you need in the Historical Data Table.
2. Click CSV at the upper-right of the table.
3. Open the downloaded CSV file.

1. Check that you selected the correct parameters.
2. Choose a date range when the sensor was reporting.
3. Try a different time interval.
4. If readings are still missing, check the sensor’s activity information on the Details tab.

For a visual view of trends, see Analyzing Sensor Measurements.