This chart displays all temperatures and state information logged by BrewPi. Not all temperatures are shown by default, but you can toggle them with the colored dots.
Click and drag left or right to zoom horizontally, click and drag up or down to zoom vertically. Double click to zoom out. When zoomed in, you can hold shift to pan around. On your phone or tablet you can just pinch to zoom.
The state information is shown as colored bars at the bottom of the graph, explanation below.