> 1 contour -Z1
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> 2 contour -Z2
-167.2226	52.9395674765	2
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> 3 contour -Z3
-167.1226	52.9076306306	3
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> 4 contour -Z4
-167.1976	52.8698509367	4
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> 5 contour -Z5
-167.1476	52.8629340304	5
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> 6 contour -Z6
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> 7 contour -Z7
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