That's just it. You don't know. For a stock bike to get that low MPG there may be something wrong. Like it was said earlier, if cylinder temp sensor was bad, the bike would always have the "choke" on.
In this case it would be added pulse width to the injectors. Hydrocarbons coming out the exhaust would be high, which would lead to diluted crankcase oil.
Actually Hoop you are correct, I use fuel mileage as a yardstick to how my bike is doing, but if you have no initial reference point you really have no idea, being your riding style determines a large portion of your fuel mileage, "all things being equal..."!!!