> 1 contour -Z1
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> 2 contour -Z2
-175.9599	51.8270815916	2
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> 3 contour -Z3
-176.0099	51.7858578976	3
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> 4 contour -Z4
-175.9349	51.7778854172	4
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> 5 contour -Z5
-175.9849	51.7559060402	5
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> 6 contour -Z6
-175.9349	51.7525799461	6
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> 7 contour -Z7
-175.9849	51.7285172911	7
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> 8 contour -Z8
-175.9599	51.7292610894	8
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> 9 contour -Z9
-175.9599	51.7120829703	9
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