<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: Historic Data Reports

For quick reporting on monitoring data, use historic data reports as an alternative to the exhaustive reports function. You can view a report of the historic data for each single sensor, on demand. Additionally, you can also export this data and download it to your computer for further processing in external applications.

There are two possibilities to call the function for historic data reports: Either you click on the Historic Data tab on a sensor's detail page, or you choose Sensors | View Historic Data from the main menu.

Historic Data (Sensor Tab)

Pages of probes, groups, device, and sensors have a tab-like interface. Using the tabs you can navigate through various sub-pages of an object in order to show your network's status, view monitoring results, or change settings.

Tabs Bar on Sensor Pages

The Historic Data tab is available for sensors only (not for probes, groups, or devices). When you call the historic data reports via this tab, there is no sensor selection available because you already determined which sensor you want to create a report for. If you want to select another sensor for the report, choose Sensors | View Historic Data from the main menu.

Historic Data Tab of Ping Sensor

Historic Monitoring Data (Sensors Main Menu)

When you call historic data reports via the View Historic Data entry from the Sensors entry in the main menu, you additionally have to choose the sensor you want to create a report for with the Object Selector.

Historic Monitoring Data Settings

Settings
Sensor	This field is only visible if you call the historic data function via the main menu. Select the sensor you want to create the report for: Click on the reading-glass symbol to open the object selector. For more information, see section Object Selector.
Start	Specify the start date and time of the data you want to review. Use the date time picker to enter the date and time.
End	Specify the end date and time of the data you want to review. Use the date time picker to enter the date and time.
Quick Range	In this section you can use several buttons for a faster selection of start and end dates. Click on any of these links to change the Start and End values above. Choose between: 1 Day, 2 Days, 7 Days, or 14 Days: Set the date range to the respective day(s). 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 particularly following day.
Average Interval	With this option, you can activate and set up averaging. Select an interval for which PRTG calculates the average value. You can choose between No Interval (no averaging is performed and only raw data displayed), a few seconds, minutes, hours, or a whole day (24 Hours). A smaller interval results in a more detailed report for this sensor. The best settings for you vary, depending on the scanning interval of the sensor, the selected date period and, of course, the intended use for the report. It might be useful to try different settings to see what the results look like. Please also see the section Automatic Averaging below.
Channels	Select the channels you want to include in the report. You can select or deselect single channels with the respective check boxes, and select or deselect all channels with the buttons Show all resp. Hide all. PRTG shows only the data of selected data in the report.
Cluster Node	This field is only visible if the sensor is running on a cluster probe. Select the cluster node's data that PRTG uses for the report. Choose between: All nodes: Include the data of all cluster nodes in the report. [Several specific nodes]: Use a specific node's data for the report. The nodes you see are specific to your setup.
File Format	Select the output format for the report. Choose between: HTML web page: Display the result directly as HTML web page. This is also a good option to check results before exporting to another file format. XML file: Export the data as Extensible Markup Language (XML) file. Usually, you browser shows a download dialog when you use this option. CSV file: Export the data as Comma Seperated Values (CSV) file, for example, for import into Microsoft Excel. Usually, you browser shows a download dialog when you use this option.

Include Percentiles
Percentile Results	Select if PRTG shows percentiles in the report. Choose between: Do not show percentiles: PRTG does not calculate percentiles. Show percentiles: Enable percentiles in the report. In the overview table, PRTG displays additional values with averages/sums for each sensor channel. Define additional settings below. For more information about percentiles, please see section Calculating Percentiles.
Percentile	This field is only visible if you enable percentile results above. Enter which percentile you want to calculate. Please enter an integer value.
Percentile Average	This field is only visible if you enable percentile results above. Enter the averaging interval in seconds that is used for percentile calculation. Please enter an integer value.
Percentile Mode	This field is only visible if you enable percentile results above. Choose between: Discrete: Chooses the next smaller discrete value. Continuous: Interpolates between discrete values. See section Calculating Percentiles for more information about the discrete and continuous modes.

Click on Start to start the generation of a historic data report. Note: Data reporting is limited to 5 requests per minute.

Automatic Averaging

For performance reasons, PRTG automatically averages monitoring data when calculating data for large time spans. Data is then averaged regardless of the selected average interval.

Time Span in Report	Minimum Level of Detail (Average Interval)
Up to 40 days	Any
40 to 500 days	60 minutes/1 hour or larger

A report for a time span of more than 500 days is not possible. If you try to set a larger time span, it will be reduced to 365 days automatically.