How to restore (mobile) data usage? I've an S3 and until yesterday I've PACMAN ROM running - previous: Paranoid Android

I made a Nandroid backup, in using titanium backup but I've forgotten to save my mobile data usage.

Now I'm searching for an way to get it back (without restore the backup, if possible)
Is there any absolute path to a file?
This time the correct approach, hopefully:

XDA mentions the stats being located in /data/system/netstats/* (the statistic data you are looking for) and /data/system/netpolicy.xml (configuration of the applications that have restricted reference data).