Dear Chee MEng
You can generate a top 100 high / low reports for the primary channel. The according report templates are usually located in C:\Program Files (x86)\PRTG Network Monitor\webroot for the base templates and the subfolder details for the actual data generation.
You could copy such template files and change them to your liking and use them for reports. Please don't change the default files as those will be overwritten with every PRTG software updates.
Please note the "avg" settings. Depending on that interval, you get different min/max values.
This report only considers the primary channel of each sensor. You cannot have this list generated for other channels. You can change the primary channel for each sensor though.
Another option is to use the PRTG API to extract the historic data to XML or CSV. This allows further processing in other application like Excel. Please have a loot at this this article.
There are some things to consider:
- Depending on the average interval you set, (parameter "avg") you get different min/max values.
- In case some channels have no data, you see a zero value instead of 'no data'. There is no way to tell an actual zero value from a no-data value.
- If the entire sensor got no data at all, no data entry for that time stamp is available. If you like to get downtimes, you have to compare the time stamps.
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