> 0.2 contour
-174.723	51.4	0.2
-174.723	51.425	0.2
-174.72	51.45	0.2
-174.715	51.475	0.2
-174.707	51.5	0.2
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> 0.4 contour
-174.522	51.4	0.4
-174.522	51.425	0.4
-174.518	51.45	0.4
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> 0.6 contour
-174.431	51.4	0.6
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-174.428	51.45	0.6
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-174.416	51.475	0.6
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> 0.8 contour
-174.381	51.4	0.8
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> 1 contour
-174.346	51.4	1
-174.352	51.4053	1
-174.363	51.425	1
-174.352	51.4438	1
-174.345	51.45	1
-174.327	51.4608	1
-174.308	51.45	1
-174.302	51.4442	1
-174.29	51.425	1
-174.302	51.4048	1
-174.306	51.4	1