As regards statistics, two surveys are available: "Campaign Overview" and "Overview websites". These provide a quick overview of the most important data of the two fields and a utilization overview.
In the usage overviews to find a graphic and two vertical lines. The blue line indicates how many percent are from day to. The purple line indicates the normal distribution to delivery. The red line shows the percentage normally to the current time is reached.
As about at night usually less volume is delivered as in the daytime hours, hereby delivery curve is smoothed.
The purple line indicates where the delivery should be at the current time.