> 4 contour
168.06	-18.7886	4
168.143	-18.7761	4
168.226	-18.7719	4
168.31	-18.7836	4
168.393	-18.8157	4
168.435	-18.843	4
168.476	-18.8744	4
168.527	-18.9263	4
168.56	-18.9772	4
168.577	-19.0096	4
168.597	-19.093	4
168.597	-19.1763	4
168.574	-19.2596	4
168.56	-19.2888	4
168.528	-19.343	4
168.476	-19.3981	4
168.441	-19.4263	4
168.393	-19.4579	4
168.31	-19.4891	4
168.226	-19.5008	4
168.143	-19.4979	4
168.06	-19.4838	4
167.983	-19.4263	4
167.976	-19.4194	4
167.9	-19.343	4
167.893	-19.3318	4
167.851	-19.2596	4
167.83	-19.1763	4
167.831	-19.093	4
167.852	-19.0096	4
167.893	-18.9421	4
167.904	-18.9263	4
167.976	-18.8529	4
167.986	-18.843	4
168.06	-18.7886	4
> 8 contour
168.06	-18.9651	8
168.143	-18.9294	8
168.226	-18.9269	8
168.31	-18.9488	8
168.385	-19.0096	8
168.393	-19.0228	8
168.432	-19.093	8
168.43	-19.1763	8
168.393	-19.2423	8
168.384	-19.2596	8
168.31	-19.3244	8
168.251	-19.343	8
168.226	-19.3528	8
168.158	-19.343	8
168.143	-19.3416	8
168.06	-19.3028	8
168.025	-19.2596	8
167.99	-19.1763	8
167.99	-19.093	8
168.022	-19.0096	8
168.06	-18.9651	8
> 12 contour
168.143	-18.9922	12
168.226	-18.9782	12
168.282	-19.0096	12
168.31	-19.0251	12
168.367	-19.093	12
168.365	-19.1763	12
168.31	-19.2472	12
168.295	-19.2596	12
168.226	-19.3033	12
168.143	-19.275	12
168.121	-19.2596	12
168.06	-19.1854	12
168.054	-19.1763	12
168.053	-19.093	12
168.06	-19.0813	12
168.117	-19.0096	12
168.143	-18.9922	12
> 16 contour
168.143	-19.0462	16
168.226	-19.0171	16
168.31	-19.0767	16
168.323	-19.093	16
168.321	-19.1763	16
168.31	-19.1908	16
168.226	-19.2596	16
168.226	-19.2597	16
168.226	-19.2596	16
168.143	-19.2208	16
168.102	-19.1763	16
168.101	-19.093	16
168.143	-19.0462	16