Hello Professor,
The movements are roughly split 50/50 between fixed wing departures and arrivals with maybe one or two helicopter movements included.
The hours in which 99% of these movements occur are between 6am and 10pm (16 hours).
Divide the 1353 by that 16 hours and you get about 85 movements per hour. Divide that by two and get approx 42 departures and 42 arrivals in any particular hour.
The peak hours, however, are roughly between 7am to 11am and 5pm to 8pm, with relatively quiet hours in the middle of the day.
It is therefore easily possible to have a few hours of 90+ movements / hour. About one movement every 45 seconds.
But it all averages out to give about 85 movements / hour over the 16 busy hours of the day.
I will find the busiest hour on that day when I'm next at work (Saturday) and post soon after.
Hope this helps,
AI
[This message has been edited by Aluminium Importer (edited 27 June 2001).]