It's a great piece of work!!

And if we were really ambitious, we would probably have a look at our files and do a minor update to reflect information that has come to light over the last few years. Perhaps some minor tweaking of a couple of the batch ranges.

Jeff

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: That's a nice piece of work, even if I do say so myself! I'd
: forgotten I'd written that, but there's a good mix of hard data
: and extrapolation.