My query is displaying week 53. Why is this?
This happens because the last week of one year and the first week of another year often coexist. In this case, Explore breaks this data into two weeks when it uses one of the Week of year attributes. To avoid this, you can display the start date of the week instead of the week number.
For more information, see this article: How do I display the start date of the week instead of the week number?