You can detach a tab into its own top-level window by doing a right-click on the tab, or clicking the tab detach button that appears when you move the mouse over the right edge of the tab. This enables you to see more than one type of network statistics at the same time as well as giving you the possibility to resize the window.
The network cards tab was detached into its own top-level window, and resized to allow all the columns to be displayed at once.
You can also click the detach button located at the top right to detach the entire main application window. This enables you to resize the application while at the same time having all the views inside one window frame.