Welcome to Market Profile Series. In the last tutorial we seen Excess High and Excess Low. In this tutorial we will be seeing couple of examples on Halfback Reference. Halfback generally refers mid point of the previous days profile (prev days (H+L)/2). Halfback is a Weaker intraday reference or shorter timeframe reference where the weak day timeframe or shorter term timeframe traders are entering at that point mechanically at that reference level exactly or 1-tpo above/below halfback reference level.