Not sure what you mean. I do know that it takes water longer to boil at higher altitudes. If we both had the same stove and same pot and filled it with equal amounts of water and coordinated a time on the phone to turn the stove on at exact same time, my pot here in Ohio would boil faster than someone who lived at a higher altitude in Colorado. Thats the only thing I can think of. I dont really recall any cooking instructions that differ by location, but that would be my guess.