This section will display a chart with the number of impressions bought through each Exchange and a second metric of your choice- Total Clicks, Total Pc Conversions, Total Pv Conversions or Total Spend. This section is valuable for making manual optimizations to your campaigns by evaluating the performance across each Exchange and removing the Exchanges with poor performance. Below the chart, all of the data is available in a table that can be downloaded as a CSV file by clicking the black down arrow next to the search bar.