PRTG Manual: Historic Data Reports

Sensor

This setting is only visible if you open View Historic Data from the main menu bar.

To select the sensor for which you want to create the report, click to open the object selector.

For more information, see section Object Selector.

Start

Specify the start date and time for the data that you want to review. Use the date time picker to enter the date and time.

You cannot generate the historic data report if monitoring data was deleted after the specified start date. Set the start of the report to a date for which data is available.

End

Specify the end date and time for the data that you want to review. Use the date time picker to enter the date and time.

Quick Range

You can use several buttons to select start and end dates more quickly. Click any of these buttons to change the Start and End values:

• 1 Day, 2 Days, 7 Days, or 14 Days: Set the date range to the respective day or days. The current time of the current day is the end date.
• Today, Yesterday, Last Week (Mo-Su), Last Week (Su-Sa), Last Month, 2 Months, 6 Months, 12 Months: Set the date range to the last matching period. It starts at 00:00 and ends at 00:00 of the following day.

Averaging Interval

With this option, you can activate and configure averaging. Select an interval for which PRTG calculates the average value:

• No interval (display raw data): PRTG performs no averaging and displays only raw data.
  PRTG stores raw data for up to 40 days. After this time, PRTG calculates averages again.
• 15 seconds, 30 seconds, or 60 seconds/1 minute
• 2 minutes, 5 minutes, 10 minutes, 15 minutes, 20 minutes, or 60 minutes/1 hour
• 2 hours, 4 hours, 6 hours, 12 hours, or 24 hours/1 day

A shorter interval results in a more detailed historic data report for the sensor.

The best settings for you depend on the scanning interval of the sensor, the selected time period, and the intended use for the historic data report. Try different settings and compare the results. See also Automatic Averaging in this section.

Channels in Graph

This setting is only visible if you view historic data via the Historic Data tab of a sensor.

Select the channels that you want to include in the graph of the historic data report. You can select individual channels via the respective check boxes, and show or hide all channels via the Show all or Hide all buttons. In the graph, PRTG then only shows the data of selected channels.

The historic data report table always shows the data of all channels.

Cluster Node

This setting is only visible if the sensor runs on a cluster probe.

Select the cluster node's data that PRTG includes in the historic data report:

• All nodes: Include the data of all cluster nodes in the report.
• [Several specific nodes]: Use a specific cluster node's data for the report. The cluster nodes you see are specific to your setup.

File Format

Select the output format for the report:

• HTML web page: Display the result directly as an HTML web page. This is also a good option if you want to check the results before you export them to a different file format.
• .xml file: Export the data as an .xml file. Your browser usually shows a download dialog when you use this option.
• .csv file: Export the data as a .csv file, for example, to import it into Microsoft Excel. Your browser usually shows a download dialog when you use this option.

Percentile Results

Define if you want to include an additional percentile calculation of your data in the historic report:

• Do not show percentiles (default): PRTG does not use a percentile formula to calculate your monitoring results. It only shows the standard values.
• Show percentiles: PRTG displays an additional percentile calculation for the primary channel in the value table for each scanning interval.
   

Example of a Historic Data Report with Percentile Calculation for the Primary Channel

Percentile Type

This setting is only visible if you select Show percentiles above.

Enter the percentile type that you want PRTG to use for the calculation. If you choose, for example, to calculate the 95th percentile, enter 95 here and 5% of peak values are discarded. Enter an integer.

Percentile Averaging Interval

This setting is only visible if you select Show percentiles above.

Enter a value to define the averaging interval on which PRTG bases the percentile calculation. The default value is 300 seconds (5 minutes). This means that PRTG takes 5-minute averages as basic values for the percentile calculation. Enter an integer.

Percentile Mode

This setting is only visible if you select Show percentiles above.

Select the mode for percentile calculation:

• Discrete: PRTG takes discrete values to calculate percentile results.
• Continuous: PRTG interpolates between discrete values and bases the calculation on interpolated values.

Up to 40 days

Any

40 to 500 days

60 minutes/1 hour or longer