Let us play a little Sherlock Holmes: At the right we see the usage pattern of a scrole bar. So the user is operating at least one programm in full screen mode. There are no clicks in the upper right or lower right. So the scroll bar was quite large and the user seems to prefer the upper third of the scroll bar for moving it.
There are no clicks to the upper right corner, but several to the upper left. Mac style interface? Or just one application running in full-screen all the time?
The pattern at the top indicates a menu or tab row. So probably no gaming?
Not many clicks at the left few inches, but quite a few in a vertical pattern thereafter. Browsing HN? Or an application with a little used side bar or side menu? Coding? Can we identify the IDE?
Several click to the same spot towards the upper right indicate either a closing button of a re-occurring modal dialog or a button (unlikely) at this place.
The pattern at the centre seems to indicate text processing of some kind, where the user tends to prefer a line a little below the middle of the screen.
Some other patterns in the center seem to indicate secondary windows: dialogs or sub-frames of the main application. There is no indication of switching application via a task bar at the bottom of the screen. So there is none, or only a single application was used all the time, or the user prefers another method of switching applications, such as ALT+TAB.
Anything else?