its total directional volume of major strongest pairs EURUSD ,EURGBP, EURJPY, EURAUD , USDJPY , GBPUSD , AUDUSD to give the most realistic trading volume to the EURUSD
you can chose the time frame away from the chart time frame , green when the market total volume buy ,red when the market total volume sell
can predict reversal and the market oversold and over bought with it .