Gotcha. Thanks for the tips, Pete.

Thank you for your response Alan. I just needed a rough estimate. So for now I'm using the method suggested by Tim. Also the utility has currently been tested only on a small test configuration. When we do further testing, I'll try out your method. The user formerly known as pkam.

I'm ashamed to admit that I have seen Ghostbusters and I liked it a lot. But it was many years ago and it just didn't click when I read the comic. I think I'll watch it again anyway.