PRTG Traffic Grapher - User Manual
Using the View Menu
Clicking on the View option from the main menu will cause the View menu to drop down:
Here you can select the desired view, change the default colors&layouts of the graphs and view the historic data of a sensor.
What is PRTG Traffic Grapher?
PRTG Traffic Grapher is an easy to use Windows software for monitoring and classifying bandwidth usage. It provides system administrators with live readings and long-term usage trends for their network devices. The most common usage is bandwidth usage monitoring, but you can also monitor many other aspects of your network like memory and CPU utilizations.