Original sentence: It also has two seaplane landing areas: 9W/27W is 5,000 x 1,500 feet (1,524 x 457 m) and 13W/31W is 10,000 x 2,000 feet (3,048 x 610 m).Sky Harbor Airport & Seaplane Base or Sky Harbor Airport  is a public airport located on Superior Bay, six nautical miles (11 km) southeast of the central business district of Duluth, a city in St.Sky Harbor Airport covers an area of 70 acres (28 ha) which contains one asphalt paved runway designated 14/32 and measuring 3,050 x 75 feet (930 x 23 m)
Edited sentence: At that time there were 36 aircraft based at this airport: 92% single-engine, 6% multi-engine and 3% helicopter.It also has two seaplane landing areas: 9W/27W is 5,000 by 1,500 feet (1,524 x 457 m) and 13W/31W is 10,000 by 2,000 feet (3,048 x 610 m).Sky Harbor Airport & Seaplane Base or Sky Harbor Airport  is a public airport in St.Sky Harbor Airport covers an area of 70 acres (28 ha) which contains one asphalt paved runway designated 14/32 which measures 3,050 by 75 feet (930 x 23 m).The airport is six nautical miles (11 km) southeast of the central business district of Duluth, Minnesota