The daily summary can be seen at the bottom of the diagram. All in progress tasks are summed with yellow color, and in testing tasks with red. For example, at point #1 in Fig. 2, the sum of the red blocks on the bottom starts to rise. This happens because there are more red lines on the top part of the diagram telling that there is a lot of testing going on. Also the number of comments and assignments per day were summed to the bottom to show a trend.