Tuning figures

[Bill Hibbert]

CD:

> I have taken Peter of Exeter, and .. have
> already published the figures on this list.

So you did - many thanks. Your figures agree very well with those 
taken from a video-camera recording I made while running across the 
cathedral green towards the tower as the clock struck 12!

Can anyone help with the others?
* Big Ben
* Great Abel (Manchester Town Hall)
* Great John (Beverley)

Cheers,

Bill H