gas mileage

does any experienced person here know the real mileage I should be getting on my 95 LS auto integra?

I am getting 150-200 miles on a tank, it seems as if I am driving local my miles dip big time, maybe 130 on a tank.

new o2 sensor, complete tune-up done, did a motor-vac. my teg is stock, so my mileage should be excellent.

please help.