gwstat <URL:http://dis.cs.umass.edu/stats/gwstat.html> uses the
output from wwwstat to generate a series of graphs. It requires a
few hefty application to generate the images but they *are* rather
nice.
By the way, wwwstat is hard coded to use the NCSA server
configuration files (even though it reads the common log format), but
can be tweaked to read the CERN files. I can mail diffs for our
installation if you would like.
Ian