Those will be external views - or non-member views. You can see external views as a blue line on the stats for the story. Member views are green. We only get paid for member reading time. And annoyingly, we all get stories that go viral on external views but do nothing among medium members. Here's an example of one of my stories that did that, with a picture of the chart. https://medium.com/midform/my-viral-article-that-earnt-96c-b21210fa0155