The Traffic tab in your dashboard includes a table of your Top 10 videos for whatever time period you select at the top of the page. This table shows how many plays each video has and the percentage of readers who have clicked to watch that video (Play Rate). These statistics help you see what's working and where you might be able to change the video’s placement on the page, or add some text that encourages more people to click on the video.
Looking for your video earnings? Check out this article.