Initially, the graph displays the consumption in queries of the Products that are activated in this Project and are being requested. We told you more about it, and even listed some use cases, in the Dashboard Metrics section.
You can also export your Metrics as a CSV file in two clicks! It will take into account the timeframe you've set and the Product you've filtered if that's the case.
You can even go deeper in understanding your Project's consumption by clicking on a Product to see its Kinds' consumption.