well basically what are the average pip ranges of the pairs during each session - ie, asian, london, ny.
I have a book that lists them but its a little old and wondered what they are currently.
If you don't have access to any FX data feed, get hold of Metatrader. Not only can you work all of that out for yourself, but you can monitor it dynamically to ensure you have the latest stats you need - whatever they might be.
