> 0.6 contour -Z0.6
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> 1.2 contour -Z1.2
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> 1.8 contour -Z1.8
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-107.635666667	18.8586734043	1.8
-107.633961726	18.8625824047	1.8
-107.624540337	18.8792451613	1.8
-107.619	18.8870253126	1.8
-107.612268627	18.8959079179	1.8
-107.602333333	18.906822462	1.8
-107.596442518	18.9125706745	1.8
-107.585666667	18.9218978862	1.8
-107.575527664	18.9292334311	1.8
-107.569	18.9336720748	1.8
-107.552333333	18.9429079445	1.8
-107.545388961	18.9458961877	1.8
-107.535666667	18.9501403339	1.8
> 2.4 contour -Z2.4
-107.485666667	18.9151223297	2.4
-107.469	18.9161509643	2.4
-107.452333333	18.9151223138	2.4
-107.438797342	18.9125706745	2.4
-107.435666667	18.9120113893	2.4
-107.419	18.9069224581	2.4
-107.402333333	18.8991607807	2.4
-107.397017844	18.8959079179	2.4
-107.385666667	18.8883554879	2.4
-107.374944389	18.8792451613	2.4
-107.369	18.8732625866	2.4
-107.359886331	18.8625824047	2.4
-107.352333333	18.8510043484	2.4
-107.349243266	18.8459196481	2.4
-107.341790518	18.8292568915	2.4
-107.337195573	18.8125941349	2.4
-107.335666667	18.8010399839	2.4
-107.334944033	18.7959313783	2.4
-107.334950186	18.7792686217	2.4
-107.335666667	18.7742286283	2.4
-107.337212246	18.7626058651	2.4
-107.341817904	18.7459431085	2.4
-107.349280475	18.7292803519	2.4
-107.352333333	18.7242586672	2.4
-107.359928884	18.7126175953	2.4
-107.369	18.7019853679	2.4
-107.37498968	18.6959548387	2.4
-107.385666667	18.6868778958	2.4
-107.397058751	18.6792920821	2.4
-107.402333333	18.6760614549	2.4
-107.419	18.668290194	2.4
-107.435666667	18.6631947287	2.4
-107.438827688	18.6626293255	2.4
-107.452333333	18.6600803077	2.4
-107.469	18.6590503084	2.4
-107.485666667	18.6600802749	2.4
-107.499172485	18.6626293255	2.4
-107.502333333	18.6631946969	2.4
-107.519	18.6682901384	2.4
-107.535666667	18.6760615577	2.4
-107.540940881	18.6792920821	2.4
-107.552333333	18.686878449	2.4
-107.563009079	18.6959548387	2.4
-107.569	18.7019870077	2.4
-107.578069261	18.7126175953	2.4
-107.585666667	18.7242622332	2.4
-107.588717282	18.7292803519	2.4
-107.596179867	18.7459431085	2.4
-107.600785535	18.7626058651	2.4
-107.602333333	18.7742457199	2.4
-107.60304739	18.7792686217	2.4
-107.60305356	18.7959313783	2.4
-107.602333333	18.8010228943	2.4
-107.600802208	18.8125941349	2.4
-107.596207258	18.8292568915	2.4
-107.588754509	18.8459196481	2.4
-107.585666667	18.8510008132	2.4
-107.578111832	18.8625824047	2.4
-107.569	18.8732609707	2.4
-107.563054373	18.8792451613	2.4
-107.552333333	18.8883549148	2.4
-107.540981756	18.8959079179	2.4
-107.535666667	18.8991606563	2.4
-107.519	18.9069224909	2.4
-107.502333333	18.9120114211	2.4
-107.499202814	18.9125706745	2.4
-107.485666667	18.9151223297	2.4
> 3 contour -Z3
-107.469	18.8803691852	3
-107.455679566	18.8792451613	3
-107.452333333	18.8789656662	3
-107.435666667	18.8746905448	3
-107.419	18.8670293737	3
-107.412282933	18.8625824047	3
-107.402333333	18.8547308971	3
-107.393761239	18.8459196481	3
-107.385666667	18.8345399691	3
-107.382402278	18.8292568915	3
-107.375640065	18.8125941349	3
-107.372452545	18.7959313783	3
-107.372456724	18.7792686217	3
-107.375652253	18.7626058651	3
-107.382421217	18.7459431085	3
-107.385666667	18.7406919337	3
-107.393784551	18.7292803519	3
-107.402333333	18.7204909588	3
-107.412306231	18.7126175953	3
-107.419	18.7081835669	3
-107.435666667	18.7005161781	3
-107.452333333	18.6962373014	3
-107.455712128	18.6959548387	3
-107.469	18.6948325762	3
-107.482288256	18.6959548387	3
-107.485666667	18.6962372607	3
-107.502333333	18.7005160996	3
-107.519	18.7081834934	3
-107.525693782	18.7126175953	3
-107.535666667	18.720491078	3
-107.544215029	18.7292803519	3
-107.552333333	18.7406930024	3
-107.555577946	18.7459431085	3
-107.562346609	18.7626058651	3
-107.565541991	18.7792686217	3
-107.565546167	18.7959313783	3
-107.562358791	18.8125941349	3
-107.555596884	18.8292568915	3
-107.552333333	18.8345388841	3
-107.544238313	18.8459196481	3
-107.535666667	18.8547307491	3
-107.525717048	18.8625824047	3
-107.519	18.8670294313	3
-107.502333333	18.8746906083	3
-107.485666667	18.878965693	3
-107.48232069	18.8792451613	3
-107.469	18.8803691852	3
> 3.6 contour -Z3.6
-107.469	18.84670374	3.6
-107.462672105	18.8459196481	3.6
-107.452333333	18.8444304804	3.6
-107.435666667	18.8369675094	3.6
-107.425739173	18.8292568915	3.6
-107.419	18.821466948	3.6
-107.413325597	18.8125941349	3.6
-107.408128119	18.7959313783	3.6
-107.408131069	18.7792686217	3.6
-107.413333539	18.7626058651	3.6
-107.419	18.75374689	3.6
-107.425751194	18.7459431085	3.6
-107.435666667	18.7382398873	3.6
-107.452333333	18.7307735727	3.6
-107.462695183	18.7292803519	3.6
-107.469	18.7284987096	3.6
-107.475305025	18.7292803519	3.6
-107.485666667	18.7307734933	3.6
-107.502333333	18.7382397433	3.6
-107.512248975	18.7459431085	3.6
-107.519	18.7537467142	3.6
-107.524666486	18.7626058651	3.6
-107.529868878	18.7792686217	3.6
-107.529871819	18.7959313783	3.6
-107.524674412	18.8125941349	3.6
-107.519	18.8214670989	3.6
-107.512260974	18.8292568915	3.6
-107.502333333	18.8369676365	3.6
-107.485666667	18.8444305599	3.6
-107.475328103	18.8459196481	3.6
-107.469	18.84670374	3.6