It's possible for
example to export a whole month's worth of data from WL to a standard
text file and from there it would be possible to use Excel or, as a
realistic option depending on your programming skills, write your own
program to process the text file data.

I copy everything now to Excel, on a daily basis, and find that I can
retrieve much more from it.
I have only very basic computer knowledge, so if I can, anyone can.
--
David Mitchell, 70m amsl, Langtoft, East Riding of Yorkshire.