By clicking on the Statistics under Dashboard in the left menu, you will be directed to a page which provides statistical data about your tools and latest visits done on them. This page has three sections. In the first section, some numerical information is provided. more details about each number can be found by hovering on the question marks on their top.

Statistics Top

In the second part, there is a chart which shows the unique visits in the past 30 days. By hovering on each point, more details are revealed. 

Statistics Chart

And in the final section, you can see which pages containing your tool were recently visited.
Statistics Last Visits
Notice: Statistics of each individual tool can also be seen. For this purpose, as described in the Tools List, simply click on the chart button in front of your desired tool in the list.