> 0.5 contour -Z0.5
-171.7504	51.9375181992	0.5
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-171.7004	51.946811579	0.5
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-171.407362394	51.8557837838	0.5
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-171.7504	51.9375181992	0.5
> 1 contour -Z1
-171.7004	51.882203122	1
-171.6754	51.8863381583	1
-171.6504	51.8876503257	1
-171.6254	51.8863377909	1
-171.6004	51.8822023198	1
-171.595519485	51.8808783784	1
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-171.5504	51.8674854897	1
-171.529628341	51.8557837838	1
-171.5254	51.8530864593	1
-171.5004	51.8315462485	1
-171.499541083	51.8306891892	1
-171.483396658	51.8055945946	1
-171.478883962	51.7805	1
-171.48348419	51.7554054054	1
-171.499725078	51.7303108108	1
-171.5004	51.7296377888	1
-171.5254	51.7080395729	1
-171.529819743	51.7052162162	1
-171.5504	51.6935983446	1
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-171.595621281	51.6801216216	1
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-171.6254	51.6746658828	1
-171.6504	51.6733473997	1
-171.6754	51.674665548	1
-171.7004	51.6788195216	1
-171.705181838	51.6801216216	1
-171.7254	51.6844684362	1
-171.7504	51.6935967159	1
-171.770971658	51.7052162162	1
-171.7754	51.7080472157	1
-171.8004	51.7296339185	1
-171.801078814	51.7303108108	1
-171.817319162	51.7554054054	1
-171.821919176	51.7805	1
-171.817406703	51.8055945946	1
-171.801262766	51.8306891892	1
-171.8004	51.83155007	1
-171.7754	51.853078841	1
-171.771162932	51.8557837838	1
-171.7504	51.8674870961	1
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-171.7004	51.882203122	1
> 1.5 contour -Z1.5
-171.6754	51.8567028223	1.5
-171.6504	51.8586332104	1.5
-171.6254	51.8567022802	1.5
-171.621285514	51.8557837838	1.5
-171.6004	51.8522363535	1.5
-171.5754	51.8433900609	1.5
-171.554775391	51.8306891892	1.5
-171.5504	51.8268760617	1.5
-171.531380406	51.8055945946	1.5
-171.5254	51.7808629076	1.5
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-171.5254	51.7801406542	1.5
-171.531441039	51.7554054054	1.5
-171.5504	51.734211024	1.5
-171.554875485	51.7303108108	1.5
-171.5754	51.7176556727	1.5
-171.6004	51.7087807373	1.5
-171.621317579	51.7052162162	1.5
-171.6254	51.7043020738	1.5
-171.6504	51.702364557	1.5
-171.6754	51.7043015323	1.5
-171.679485193	51.7052162162	1.5
-171.7004	51.7087798892	1.5
-171.7254	51.7176539983	1.5
-171.745927889	51.7303108108	1.5
-171.7504	51.7342078793	1.5
-171.769352157	51.7554054054	1.5
-171.7754	51.780188401	1.5
-171.775488975	51.7805	1.5
-171.7754	51.7808146895	1.5
-171.769412763	51.8055945946	1.5
-171.7504	51.8268791873	1.5
-171.746027985	51.8306891892	1.5
-171.7254	51.8433917522	1.5
-171.7004	51.8522371907	1.5
-171.679517254	51.8557837838	1.5
-171.6754	51.8567028223	1.5
> 2 contour -Z2
-171.7004	51.8312317747	2
-171.6754	51.8389226977	2
-171.6504	51.8412229655	2
-171.6254	51.838922041	2
-171.6004	51.83123025	2
-171.599261558	51.8306891892	2
-171.5754	51.8169836714	2
-171.562991036	51.8055945946	2
-171.55421659	51.7805	2
-171.563037932	51.7554054054	2
-171.5754	51.7440602312	2
-171.599312127	51.7303108108	2
-171.6004	51.7297929382	2
-171.6254	51.722082176	2
-171.6504	51.7197755587	2
-171.6754	51.7220815248	2
-171.7004	51.7297914315	2
-171.701491086	51.7303108108	2
-171.7254	51.7440574146	2
-171.737765543	51.7554054054	2
-171.74658659	51.7805	2
-171.737812438	51.8055945946	2
-171.7254	51.8169865197	2
-171.701541702	51.8306891892	2
-171.7004	51.8312317747	2
> 2.5 contour -Z2.5
-171.7004	51.8138493386	2.5
-171.6754	51.8237654743	2.5
-171.6504	51.8264919216	2.5
-171.6254	51.8237646762	2.5
-171.6004	51.8138472505	2.5
-171.588799039	51.8055945946	2.5
-171.576733522	51.7805	2.5
-171.588831419	51.7554054054	2.5
-171.6004	51.7471717291	2.5
-171.6254	51.7372391758	2.5
-171.6504	51.7345069993	2.5
-171.6754	51.7372383786	2.5
-171.7004	51.7471696399	2.5
-171.711972005	51.7554054054	2.5
-171.724069714	51.7805	2.5
-171.712004396	51.8055945946	2.5
-171.7004	51.8138493386	2.5
> 3 contour -Z3
-171.6754	51.8106509182	3
-171.6504	51.8146526351	3
-171.6254	51.8106497573	3
-171.614788128	51.8055945946	3
-171.6004	51.7886754565	3
-171.595628438	51.7805	3
-171.6004	51.7723360392	3
-171.614806036	51.7554054054	3
-171.6254	51.7503544019	3
-171.6504	51.746346379	3
-171.6754	51.7503532321	3
-171.685997235	51.7554054054	3
-171.7004	51.7723303702	3
-171.705175085	51.7805	3
-171.7004	51.7886811277	3
-171.686015126	51.8055945946	3
-171.6754	51.8106509182	3
> 3.5 contour -Z3.5
-171.6754	51.791692578	3.5
-171.6504	51.8009577789	3.5
-171.6254	51.7916898259	3.5
-171.61544536	51.7805	3.5
-171.6254	51.7693134638	3.5
-171.6504	51.760040978	3.5
-171.6754	51.7693107027	3.5
-171.685357857	51.7805	3.5
-171.6754	51.791692578	3.5