Don't rely on me but I'm guessing that yes it's telling us there are seated and standing (floor) tix available but if the seat plan is showing both in the same section then I'm not sure what would mean. It could be that FLOOR in this sense means arena floor, ie front seating.
EDIT: Doh! 🤦♂️ Just realised, "OR" will be Gold. It's different levels of ticket. It'll likely be all seats, just in different categories.