> 4 contour
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> 8 contour
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> 12 contour
-174.683	-19.8701	12
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> 16 contour
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-174.599	-19.908	16
> 20 contour
-174.516	-19.9373	20
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-174.644	-20.0254	20
-174.599	-19.9779	20
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-174.516	-19.9373	20
> 24 contour
-174.516	-19.9747	24
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-174.518	-19.9754	24
-174.516	-19.9747	24