meteohub.de

To create filled bars instead of hollow ones, you can write:

set style fill solid 0.5|

Works fine.
I always use this: set style fill solid 0.3 which gives this:

Ok I'm going to plan dumb on this. Where do I type this is at?

Thanks
Dave

On the page "Define Graphs" there is an input field called "Format Cmd". There you can enter the commands shown in this thread.

And here you can find more code to use for your graphs :)