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> 0.015 contour
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> 0.018 contour
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> 0.018 contour
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> 0.021 contour
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-177.206	51.425	0.021
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> 0.021 contour
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-177.527	51.75	0.021
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> 0.021 contour
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> 0.024 contour
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