A.103°46'.6W B.148°36'.0E C.104°13'.4W D.148°36'.0W
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