The book is coming along. Expect a number of information requests in the next weeks, as I start pinning down details.
I need some nice charts showing ridership per hour of the day for a typical inner-city transit line, and for an outer-suburban one. Very simple bar or line graphs, covering a weekday, that I can use to illustrate the fact that outer-suburban service tends to be much more peaked and inner-city service busier all across the day. If you're inside a transit agency and have access to such things, I'd appreciate it.