In order to compare the airplanes, Sarah planned a flight from Westchester County Airport (HPN), White Plains, New York, to Kansas City International Airport (MCI), Kansas City, Missouri. Using the actual winds aloft for five different days, Sarah compared the flight times, fuel burns and passenger loads at 24,000 feet for both the jets and turboprops and at 37,000 feet for the jets. The display of the results of her research included some 60 graphs. When the results were all in, Sarah's research determined, based on all the factors and the five flights, that the Gulfstream IV was the most efficient. The Bombardier Challenger 300 came in second, followed by the King Air 200. Interestingly, depending on the winds aloft, the King Air and the Challenger switched places on at least one of the days.