A.146°26'.9E B.146°26'.9W C.110°02'.3E D.110°02'.3W
A.φ=40°N,λ=120°W B.φ=40°S,λ=120°E C.φ=40°N,λ=060°W D.φ=40°S,λ=060°W
A.30°41′.3S,15°12′.9W B.30°40′.0S,15°11′.5W C.30°39′.2S,15°12′.3W D.30°38′.1S,15°11′.1W