And you don’t! 🙂
We’re working on something in the office whereby we get access to volume data from the folks who run the Reuters forex dealing platforms so we can use it in our market analysis. Right now I can only see the current day’s data to a given point in time (we’re working on expanding that). The chart below shows Tuesday’s distribution actual traded volume by price level for GBP/USD.
By way of comparison, here’s the price time distribution for GBP/USD on the day. You’ll notice the similarity of the two distributions, but also the differences in the upper part of the day’s range.