> 4 contour
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> 8 contour
-17.8663	0.356179	8
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-18.0975	0.255	8
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-18.0226	0.305	8
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-17.8663	0.356179	8
> 12 contour
-17.8663	0.175912	12
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-18.001	-0.295	12
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-18.0484	0.055	12
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-18.001	0.105	12
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-17.8663	0.175912	12
> 16 contour
-17.8663	0.0882992	16
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-17.6632	0.055	16
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-17.6282	-0.195	16
-17.6632	-0.245	16
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-17.9496	-0.234528	16
-17.9838	-0.195	16
-18.0092	-0.145	16
-18.006	-0.095	16
-18.0092	-0.045	16
-17.9838	0.005	16
-17.9496	0.0445311	16
-17.9326	0.055	16
-17.8663	0.0882992	16
> 20 contour
-17.8663	0.0136102	20
-17.7829	0.0496535	20
-17.7014	0.005	20
-17.6996	0.00343767	20
-17.6574	-0.045	20
-17.642	-0.095	20
-17.6574	-0.145	20
-17.6996	-0.193438	20
-17.7014	-0.195	20
-17.7829	-0.239661	20
-17.8663	-0.203621	20
-17.8803	-0.195	20
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-17.9492	-0.095	20
-17.9479	-0.045	20
-17.8802	0.005	20
-17.8663	0.0136102	20
> 24 contour
-17.7829	0.00449987	24
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-17.6996	-0.0613725	24
-17.6773	-0.095	24
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-17.7209	-0.145	24
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-17.8663	-0.13588	24
-17.899	-0.095	24
-17.8663	-0.0541216	24
-17.8546	-0.045	24
-17.7829	0.00449987	24