> 1 contour -Z1
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> 2 contour -Z2
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> 3 contour -Z3
-169.8485	52.7991056973	3
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> 4 contour -Z4
-169.6735	52.7923058773	4
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> 5 contour -Z5
-169.8235	52.7714908856	5
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> 6 contour -Z6
-169.7985	52.7701679596	6
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> 7 contour -Z7
-169.7735	52.768629724	7
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> 8 contour -Z8
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> 9 contour -Z9
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