Where can I see reliable volumes In FX?

Where can I see reliable volumes In Fx on time frame h4 d1 , ?

I've studied volume imensely and currently use Pepperstone c trader and they seem to get their data from a no of interbank sources the volume is in the form of tick volume and the most reliable tf for their volume I've found is the 15m and the best pairs being EUR/USD AUD/USD and GOLD.I don't trade the 4hr but it looks like it could be useful you'll always get high vol 4H bar at the start of the US session but any higher- lower bars out of character of normal volume would be extremely useful.