Up at 7:30am, settled to desk about 8:30am and worked steadily in SPSS on traffic survey. Did lots of normality tests, then started to look at ranges and medians for dwell times. Stopped at 3:10pm, might read some stats book later re correlation but I suspect I won’t, I’m done for the day. It’s coming together in my mind now how the final shape of this Chapter 4 (yes I know I have already done Chapter 5, treat this as an episode of Doctor Who) will end and why, as a useful input to Chapter 7 and then 8. Going to have to replan my work tho’, this is going to take longer than I had hoped and planned.