The Daily widget counts the total number of keys activated in 15-minute intervals and then shows those numbers as a spike along a 24-hour axis. This data shows when your client was most productive during a single day.
The Weekly widget counts the total number of 15-minute intervals during which keys were activated on a device and then adds the times to display a column chart covering seven days from Sunday to Saturday. This data shows, at a glance, how productive a client has been during the course of a week.
The Monthly widget counts the total number of 15-minute intervals during which keys were activated on a device and then adds the times to display a bar chart covering one calendar month. This data displays changes week by week.