Cheers Gonzo, that all makes sense and is what I thought/knew as well. Many of us ATCO's at Swanwick are becoming more aware of the flow charts we get, know their inaccuracies and rarely trust them. I haven't heard any supervisor NOT say that they don't trust the data they are provided and often split earlier or at times when its not needed. But its those times when one segment shows no traffic right up to its start time, grows during the 15 minute active time span, and shows the overload fully around 10 minutes after its passed through. I'm baffled that there isn't equipment around to counteract some of the reasons for this happenning. Or is it just another case of cost.....