Each graph represents a pair/market currently being traded live.
For each market there are multiple performance curves or Paths. A Path represents a different model or algorithm that competes on the same market. Here performance of each Path is shown as a percentage of potential profit, not considering the actual traded quantities, whose managment is also important towards the bottom line profits.
The approach of trading with multiple strategies is a form of hedging that we implement to better manage risk.
Graphs also include a display of the relative Market Change during each period. This is the change in price of the asset and it indicates the relative potential for profit or loss. Ideally a strategy should take advantage of positive changes in price and minimize the influence of negative changes in price.