No to this one, and I'd rather say why than leave it sitting open.
Open tracking works by hiding an image in your issue and logging who loads it. Your readers don't know it's there and can't turn it off, and the number is wrong often enough to be misleading either way: an image blocker reads as unopened, a preview pane reads as opened.
The question underneath it is a good one though. Sunday against Thursday is answerable from clicks, which are something a reader actually chose to do, and those are already in your export. If a chart would be more use than a spreadsheet, open that as its own request and I'll look at it properly.