This is to school, so it's nice and early(cold) in the morning. I don't have concrete averages but I get anywhere from 28-31 (closer to 28-29, 30 if I'm lucky)
Coming home is obviously easier, I can get 32-38, usually about 33-35.
One thing this doesn't really take into account for me is that I park in a parking garage, don't have much choice in that matter. That always saps a few tenths from me on my way to school. One thing I've noticed is that since I pumped the tires up to 49 and took the mudflaps off I was able to get 30 going to school on a much more regular basis. It is starting to get colder though so those numbers are starting to recede. I might look into new tires before the snow comes. This is pretty cool though, thanks for the thread.