There are two types of statistics available.
(1) Campaign Statistics: It is a combine statistics of all your popup notifications.
(2) Notification Statistics: It is an individual statistics of your specific popup notification.
Campaign Statistics: It will give you the number about total impressions, mouse hovers and link clicks of your all popup notifications.
Notification Statistics: It will give you the number about total impressions, mouse hovers and link clicks of your specific popup notification. It will also provide you a list of top pages where your notification is displayed mostly.