~28 mpg, 4500 miles in. I shift at similar points and try to keep the engine between 1,900 and 3,000 rpm, mostly commute miles in stop and go. It really shines on freeway trips averaging 30+ (depending on the terrain) with the cruise control on even at 80 mph. I could easily see high 30's with forgiving terrain and ~50 mph in 6th.
Stop and go on city streets with no cruising distance will tank your mileage no matter what you drive, that's why hybrids exist. Combustion engines are best at constant speeds with constant loads (see CVT)
ALSO: Very important, the onboard average fuel economy gauge is optimistic at best, I've never had it be within 1 mpg of what I was actually getting. My last fill up it estimated that I was getting 33.0 mpg; actual: 30.99, ~6% error.