Compute total hvac activity (broken down by heat, cool, primary, secondary, etc) in hours based on data shown in current view. In other words, area (time) of the different colored bars in the graph.
This would be shown not as a tool tip, but say to the right of the legend (or where appropriate in the app).
This would be useful when viewing data from a custom range - one manually selected - ie 10/15/2025 through 11/25/2025 (or whatever range aligns with one’s bill).
