Use the mouse to mark the interval on the graph that you want to see in more detail. You can zoom in or zoom out the display by clicking on the "+" and "-" icons, and you can return to the initial level by clicking on the ““ icon. When the interval on the graph is zoomed in, it is possible to move on it by dragging the mouse if the "" icon is previously clicked. Clicking on the menu symbol ☰ provides options for downloading graphs in PNG or SVG formats and downloading data in CSV format.