Thanksgiving Crowd Calendars

I am looking at the crowd calendars around Thanksgiving this year between the 19th and 29th and I am not sure if I am reading them right. Are the park numbers connected to the overall crowd numbers? For instance, the overall crowd level on the 25th is an 8. But the crowd level for Magic Kingdom is a 4. Does that mean Magic Kingdom will be low that day or just that everything is crowded and Magic Kingdom will be the least of the 4?

The park-specific Crowd Levels are just that - park specific. In your example WDW overall is a CL 8, but MK itself is a 4. That CL 4 would be the same as a day where MK was a 4 and WDW overall was a 2.

what are the crowds normally like for Thanksgiving?