> 2 contour -Z2
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-175.3192	51.4661904993	2
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> 4 contour -Z4
-175.2442	51.4136313038	4
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-175.1942	51.4219608216	4
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> 6 contour -Z6
-175.2192	51.3866529874	6
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-175.2192	51.3866529874	6
> 8 contour -Z8
-175.2442	51.3561538677	8
-175.2192	51.3664423292	8
-175.1942	51.3716168072	8
-175.1692	51.3731770693	8
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> 10 contour -Z10
-175.1692	51.3582661748	10
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> 12 contour -Z12
-175.2192	51.3365554001	12
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-175.1942	51.2423343965	12
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> 14 contour -Z14
-175.1942	51.333791102	14
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-175.1442	51.333789565	14
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> 16 contour -Z16
-175.1942	51.3183223345	16
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-175.1942	51.3183223345	16