Nigel Hall did some rider flow predictions. A quick and dirty look at the raw data collected this time suggests that while he got the throughput pretty accurate, the timings were way out. This wasn't a failing on his part, but demonstrates the impact the weather can have. Riders were 'early' heading north, and 'late' heading south.
In my mind, this means that you can't assume that people will sleep at this control or that control. Ideally, most of them need to be ready for a deluge of riders looking to sleep or shelter for a few hours.
As most of the controls used spreadsheets to record riders, we now have a lot of data to analyse. If I can find someone foolish enough willing to key in the paper records from Lea Valley, we'll have a lot to work on, looking not just at rider flows through controls, but also how riders' speeds varied along the route.