The top bar of the heatmap report shows you:

1. The toggle on the left to switch between Heatmap and scrollmap display.
   
   
2. Opacity adjuster of the dark overlay using the Map Opacity slider.
   
   
3. The number of visitors from desktop, tablet, and mobile is displayed here.
   
   
4. The time duration of the report is available on the right. By default, it is set to shows the report between the start of the experiment and the current day. You can choose from the preset time range in the dropdown or set a custom range.
   
   
   
   
   
   

The following can be found in the tab on the right:

1. Visitors: The number of unique users coming to your web page. 
   
   
2. Engaged Visitors: The percentage value of the total number of visitors who have clicked on at least one element of the web page. This is calculated by dividing the number of visitors who have clicked on at least one element on the webpage by the total number of visitors.
   
   
3. Visits: The number of times a user (both unique and returning) visits your web page. A single visitor can have multiple visits.
   
   
4. Clicks: Total number of clicks on all the elements of the webpage.
   
   
5. Clicks/Visit: It is calculated by dividing the total number of clicks received by the web page by the total number of visits it has.
   
   
6. Top Engagements: List of web page elements ranked by the number of clicks received and the corresponding contribution for the total clicks on the webpage. 
   
   
   
   
   
   

Clicking on the element name in the list will show you its location on the page. Some elements though displayed in the list, won't be visible on the page. This can be because they are hidden. 

Here's what the Heatmap report will look like:
  

  

Here's what the Scrollmap report will look like:

   

Here's what the Attention Map report will look like: