Inexplicable Formula Alerts

Good day, Gurus,

In the sample data I've attached, on the Summary tab, you'll notice in cells K2-6, I'm seeing an alert that "the formula in [these] cell[s] refers to a range that has additional numbers adjacent to it." However, it's performing exactly as intended, but stranger still, the formula is identical in syntax to every cell below them (K7-23) for which I'm not seeing any such alert. It doesn't appear to be affecting anything, but I am curious why the alerts for only these specific cells, and further concerned it might be affecting something I'm unaware of. Any thoughts?

Thanks in advance for any help anyone might provide.