> 2.5 contour -Z2.5
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> 10 contour -Z10
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> 12.5 contour -Z12.5
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-178.545735738	-30.6978669903	12.5
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-178.335725292	-30.5979058252	12.5
-178.327433333	-30.5963012349	12.5
> 15 contour -Z15
-178.260766667	-30.6800997709	15
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-178.227433333	-30.6800996444	15
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-178.545970281	-30.864468932	15
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-178.410766667	-30.7202544827	15
-178.399264748	-30.7145271845	15
-178.3941	-30.712033737	15
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-178.260766667	-30.6800997709	15
> 17.5 contour -Z17.5
-178.2941	-30.764473599	17.5
-178.277433333	-30.7617943802	17.5
-178.260766667	-30.7602015619	17.5
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-178.110766667	-30.7970374695	17.5
-178.10953554	-30.7978281553	17.5
-178.0941	-30.8086266434	17.5
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-178.026846103	-31.0144106796	17.5
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-178.471310282	-30.9477699029	17.5
-178.469645431	-30.9311097087	17.5
-178.466304023	-30.9144495146	17.5
-178.461223381	-30.8977893204	17.5
-178.460766667	-30.8966630419	17.5
-178.45420625	-30.8811291262	17.5
-178.445176652	-30.864468932	17.5
-178.4441	-30.862813431	17.5
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-178.41939491	-30.8311485437	17.5
-178.410766667	-30.8226892858	17.5
-178.401492379	-30.8144883495	17.5
-178.3941	-30.8086254473	17.5
-178.378667015	-30.7978281553	17.5
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-178.347321341	-30.7811679612	17.5
-178.3441	-30.7797179345	17.5
-178.327433333	-30.7733893459	17.5
-178.310766667	-30.768331772	17.5
-178.294252186	-30.764507767	17.5
-178.2941	-30.764473599	17.5
> 20 contour -Z20
-178.260766667	-30.8466192965	20
-178.2441	-30.8457102403	20
-178.227433333	-30.8466190664	20
-178.220166968	-30.8478087379	20
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-178.11975706	-30.9311097087	20
-178.116777853	-30.9477699029	20
-178.116766565	-30.9644300971	20
-178.119724399	-30.9810902913	20
-178.125720032	-30.9977504854	20
-178.127433333	-31.0009205322	20
-178.135707055	-31.0144106796	20
-178.1441	-31.0245641205	20
-178.150433986	-31.0310708738	20
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-178.2941	-31.0575533906	20
-178.310766667	-31.0502548662	20
-178.315232063	-31.047731068	20
-178.327433333	-31.0395850559	20
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-178.37142497	-30.9477699029	20
-178.368445783	-30.9311097087	20
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-178.360766667	-30.9113709182	20
-178.352428159	-30.8977893204	20
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-178.260766667	-30.8466192965	20