Maybe, 1st step though is to get the data from the SH3 using a command line.
as far as I can tell there is no telenet or ssh access, which is what I've used with my other modem.
The alternative is to access the web page, but I can't find a direct url that will give you access to the relevant pages. If you can find a direct url that will do that, then its just a matter of parsing the raw web page data returned and using that.
ps. I'm using mine in modem mode, so you'll probably need to change 192.168.100.1 to 192.168.0.1 if you aren't I haven't yet got around to parsing the output to use for graphing, but will do as soon as I have some spare time.