> 4 contour
-174.439	-20.0011	4
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> 8 contour
-174.273	-20.3242	8
-174.268	-20.3252	8
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> 12 contour
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-174.42	-20.4752	12
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> 16 contour
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-174.264	-20.4752	16
-174.195	-20.5252	16
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-174.206	-20.6252	16
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-174.273	-20.4703	16
> 20 contour
-174.273	-20.4907	20
-174.221	-20.5252	20
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-174.244	-20.6252	20
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-174.363	-20.5752	20
-174.356	-20.56	20
-174.344	-20.5252	20
-174.273	-20.4907	20