When you move your mouse over a graph while the legend is hidden, a small info box appears next to your cursor with details for that specific moment. It shows the date, time, item names, their unit of measurement, and the values at that point in time.

As soon as you open the legend by clicking the arrow in the bottom right corner of the graph, additional information and options become available:

• You can show or hide lines in the graph using the green toggles to the left of each item in the legend.

• By clicking an item in the legend, all its data points are highlighted in bold within the graph. This makes it easier to follow a specific item or check whether any data is missing.
  

• The legend also shows:

  • Whether a factor has been applied
    

  • Whether the values apply to the left or right y-axis,
    

  • And the minimum, maximum, and average values.
    These are always calculated based on the time period currently under the graph.