> 0.5 contour -Z0.5
-172.7719	52.1763744433	0.5
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> 1 contour -Z1
-172.7719	52.0776501077	1
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-172.846887147	52.0489918919	1
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> 1.5 contour -Z1.5
-172.7719	52.0345320151	1.5
-172.7469	52.0414055851	1.5
-172.7219	52.0449831489	1.5
-172.6969	52.0460821554	1.5
-172.6719	52.0449830338	1.5
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-172.8219	52.0068244866	1.5
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-172.7719	52.0345320151	1.5
> 2 contour -Z2
-172.7719	52.005098864	2
-172.7469	52.0153441698	2
-172.7219	52.0203859213	2
-172.6969	52.0218800519	2
-172.6719	52.0203857916	2
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-172.6969	51.8763212422	2
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> 2.5 contour -Z2.5
-172.7219	52.002119574	2.5
-172.6969	52.0046031644	2.5
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> 3 contour -Z3
-172.7469	51.9744003395	3
-172.7219	51.9854491921	3
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-172.6719	51.9854488876	3
-172.6469	51.9743995845	3
-172.646429011	51.974072973	3
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-172.6469	51.9238208815	3
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-172.7219	51.9127563019	3
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> 3.5 contour -Z3.5
-172.7219	51.9625219668	3.5
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