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The archaeological sites labeled on the X axis are listed according to their longitudes with the westernmost GTY on the left and the easternmost Quanhu on the right. GTY–Guantaoyuan; BSL–Beishouling; AB–Anban; HXZ–Huxizhuang; BJC–Baijiacun; JZ–Jiangzhai; QH–Quanhu.
