No. He defined a fixed size, which I was trying to avoid. Also, he messed up the fonts. So far he hasn't responded to my talk page inquiry. In the mean time I have uploaded a new version with a blue graph and a slightly increased font size (and changed to font 'Verdana' as per preference of Fred the Oyster). It seems that MediaWiki always opts for a 512px width, when no fixed size is available. Take another look, and let me know whether you want the size to be fixed.