I guess I'm just curious. From timing my trip, I know that start to finish I average somewhere around 10-12 mph (including time spent stopped at lights, etc). But I know that can vary a lot; I don't know data like cadence, and I don't know my actual speed while in motion.

I'm not going for high performance, but I figured knowing some of this useless data might be useful in learning how to be more efficient (technique, etc). I don't trust my "sense" of speed, etc.