My bad, by % i meant variable.
The plan was to run a timer that ran every hour, an added a line in a file. Something like shown here http://irc.netsplit.de/networks/top.var but all items in one, for one network only. The format I was trying to get was something like:

date; hour; channels; local_users; max_local_users; global users; max_global_users; number_of_channels

Given a list of these, I could make Excel draw a nice graph of this over time. If your code can draw something like that in mIRC itself, that'd be even better. Tia m8.

- sChutt