Region

Range

A (North Africa)

0˚ - 30˚E, 15˚ - 30˚N

B (Middle East)

35˚ - 60˚E, 15˚ - 30˚N

C (Western Middle Asia)

47.5˚ - 70˚E, 37.5˚ - 50˚N

D (Eastern Middle Asia and Northwest China)

72.5˚ - 100˚E, 37.5˚ - 50˚N

E (Eastern Northwest China)

100˚ - 110˚E, 30˚ - 40˚N

F (North China)

110˚ - 120˚E, 35˚ - 50˚N

G (Northeast China)

121˚ - 135˚E, 37.5˚ - 50˚N