Dashboards are completly customizeable to display the information that is relevant to you.
To create a dashboard:
On a dashboard you can create two types of visuals: readings and graphics.
Readings are a visual display of the last measurement from a specific column of data. They are especially useful for displaying real-time data.
Graphics are plots of data on a 2-axis figure. Each graphic is customizable and can contain a primary X axis, a primary and secondary Y axis.