Honda Ridgeline Mileage

Miles per gallon (rounded) for various dates in my 2007 Honda Ridgeline:
19.1, 15.9, 12.1, 15.5, 20.4, 17.1, 20.9, (32.8?), 19.4, 22.2, 21.8, 20.7, 15.2, 18.9, 16.4, 18,0, 17.8, 19.2, 18.0, 21.8, 17.8, 17.0, 18.5, 18.3, 18.0, 19.5, 19.5, 12.1, 12.6, 21.7, 12.0, 20.2, 12.3, 12.2, 12.3, 12.5

Generally, the lower mileage is from around-town driving, and the mileage in or near the 20s is from highway driving.