> 3 contour
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> 6 contour
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> 9 contour
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> 9 contour
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> 12 contour
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> 12 contour
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> 15 contour
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> 18 contour
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-174.797	-21.8712	18
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> 21 contour
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> 24 contour
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-175.26	-21.6672	24
-175.227	-21.6172	24
-175.214	-21.6093	24