> 2 contour -Z2
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> 4 contour -Z4
-175.2341	51.3829055027	4
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-175.1841	51.3912724907	4
-175.1591	51.3922103975	4
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-175.2341	51.3829055027	4
> 6 contour -Z6
-175.2091	51.3559241366	6
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> 8 contour -Z8
-175.2091	51.3357261418	8
-175.1841	51.3409234997	8
-175.1591	51.3424895504	8
-175.1341	51.3409224058	8
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> 10 contour -Z10
-175.1591	51.3275442317	10
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-175.1341	51.3252609101	10
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> 12 contour -Z12
-175.2091	51.3058321219	12
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-175.2341	51.2851472018	12
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-175.2091	51.3058321219	12
> 14 contour -Z14
-175.1841	51.3030848277	14
-175.1591	51.3062639539	14
-175.1341	51.3030825752	14
-175.127079622	51.30046	14
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> 16 contour -Z16
-175.1841	51.2875999997	16
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-175.1841	51.2875999997	16