> 4 contour
170.999	-21.5625	4
171.083	-21.5546	4
171.166	-21.5525	4
171.249	-21.559	4
171.282	-21.5646	4
171.333	-21.5721	4
171.416	-21.593	4
171.499	-21.6222	4
171.545	-21.6479	4
171.583	-21.6693	4
171.666	-21.7257	4
171.673	-21.7313	4
171.749	-21.7994	4
171.764	-21.8146	4
171.832	-21.8979	4
171.833	-21.899	4
171.885	-21.9813	4
171.916	-22.0551	4
171.92	-22.0646	4
171.948	-22.1479	4
171.964	-22.2313	4
171.969	-22.3146	4
171.964	-22.3979	4
171.949	-22.4813	4
171.923	-22.5646	4
171.916	-22.579	4
171.886	-22.6479	4
171.834	-22.7313	4
171.833	-22.7331	4
171.766	-22.8146	4
171.749	-22.832	4
171.675	-22.8979	4
171.666	-22.9052	4
171.583	-22.961	4
171.547	-22.9813	4
171.499	-23.0078	4
171.416	-23.0364	4
171.333	-23.0571	4
171.282	-23.0646	4
171.249	-23.0702	4
171.166	-23.0764	4
171.083	-23.0741	4
170.999	-23.0666	4
170.992	-23.0646	4
170.916	-23.0456	4
170.833	-23.0185	4
170.754	-22.9813	4
170.749	-22.9791	4
170.666	-22.9307	4
170.622	-22.8979	4
170.583	-22.8658	4
170.528	-22.8146	4
170.499	-22.7824	4
170.461	-22.7313	4
170.416	-22.6533	4
170.413	-22.6479	4
170.375	-22.5646	4
170.35	-22.4813	4
170.337	-22.3979	4
170.333	-22.3279	4
170.332	-22.3146	4
170.333	-22.3025	4
170.337	-22.2313	4
170.351	-22.1479	4
170.377	-22.0646	4
170.415	-21.9813	4
170.416	-21.9791	4
170.463	-21.8979	4
170.499	-21.8498	4
170.531	-21.8146	4
170.583	-21.7657	4
170.624	-21.7313	4
170.666	-21.6999	4
170.749	-21.651	4
170.756	-21.6479	4
170.833	-21.6112	4
170.916	-21.5839	4
170.992	-21.5646	4
170.999	-21.5625	4
> 8 contour
170.999	-22.0154	8
171.083	-21.9961	8
171.166	-21.9925	8
171.249	-22.0057	8
171.333	-22.0428	8
171.362	-22.0646	8
171.416	-22.1165	8
171.443	-22.1479	8
171.483	-22.2313	8
171.495	-22.3146	8
171.483	-22.3979	8
171.443	-22.4813	8
171.416	-22.5149	8
171.365	-22.5646	8
171.333	-22.5877	8
171.249	-22.6235	8
171.166	-22.6359	8
171.083	-22.632	8
170.999	-22.6136	8
170.934	-22.5646	8
170.916	-22.548	8
170.857	-22.4813	8
170.833	-22.4277	8
170.819	-22.3979	8
170.804	-22.3146	8
170.819	-22.2313	8
170.833	-22.2019	8
170.857	-22.1479	8
170.916	-22.0851	8
170.937	-22.0646	8
170.999	-22.0154	8
> 12 contour
171.083	-22.1236	12
171.166	-22.1103	12
171.249	-22.1447	12
171.254	-22.1479	12
171.332	-22.2313	12
171.333	-22.2354	12
171.358	-22.3146	12
171.333	-22.3941	12
171.332	-22.3979	12
171.254	-22.4813	12
171.249	-22.4846	12
171.166	-22.5179	12
171.083	-22.5048	12
171.04	-22.4813	12
170.999	-22.4507	12
170.96	-22.3979	12
170.938	-22.3146	12
170.96	-22.2313	12
170.999	-22.1785	12
171.04	-22.1479	12
171.083	-22.1236	12
> 16 contour
171.083	-22.1989	16
171.166	-22.176	16
171.249	-22.2221	16
171.258	-22.2313	16
171.296	-22.3146	16
171.258	-22.3979	16
171.249	-22.4072	16
171.166	-22.4532	16
171.083	-22.4303	16
171.046	-22.3979	16
171.016	-22.3146	16
171.046	-22.2313	16
171.083	-22.1989	16
> 20 contour
171.166	-22.2271	20
171.173	-22.2313	20
171.248	-22.3146	20
171.173	-22.3979	20
171.166	-22.4021	20
171.155	-22.3979	20
171.083	-22.3146	20
171.155	-22.2313	20
171.166	-22.2271	20