Hi Kitz, yes it's possible and it's quite easy. There's only one thing that may cause you some problems but there's ways around that.
Basically you need to extract the period you want to graph from your modem_stats.log - work on a copy of it and don't use Windows Notepad it's way to slow, I use NotePad++.
Save this file to a separate empty directory, and make a note of how many lines of data there are - NotePadd++ show the line numbers.
Now copy your new log file and then right click GraphPD.exe and paste. Or you can drag the file onto GraphPD.exe
It will ask you what period you want to graph, simply enter X m, where X is the number of lines (thus minutes worth of data)
It will now create the graphs in the folder where the log is saved.
This is something I want to add to the GUI, but simply haven't got around to yet.
Now the problem I spoke about is the physical size of your modem log file, if your not careful it can become too big to open, I split mine each year and this is a feature BE1 is going to add - automatic yearly splitting.
If it is too big to open then you need to find a way to split the file into smaller segments and then work on them.
Hope that makes sense.