> 0.4 contour
-173.277	51.425	0.4
-173.301	51.4341	0.4
-173.326	51.4472	0.4
-173.33	51.45	0.4
-173.351	51.4644	0.4
-173.363	51.475	0.4
-173.376	51.4873	0.4
-173.387	51.5	0.4
-173.401	51.5183	0.4
-173.405	51.525	0.4
-173.419	51.55	0.4
-173.426	51.5661	0.4
-173.429	51.575	0.4
-173.437	51.6	0.4
-173.442	51.625	0.4
-173.447	51.65	0.4
-173.45	51.675	0.4
-173.451	51.6955	0.4
-173.451	51.7	0.4
-173.451	51.7066	0.4
-173.45	51.725	0.4
-173.447	51.75	0.4
-173.44	51.775	0.4
-173.43	51.8	0.4
-173.426	51.8067	0.4
-173.416	51.825	0.4
-173.401	51.8461	0.4
-173.398	51.85	0.4
-173.376	51.8734	0.4
-173.374	51.875	0.4
-173.351	51.8928	0.4
-173.337	51.9	0.4
-173.326	51.9056	0.4
-173.301	51.9124	0.4
-173.276	51.9127	0.4
-173.251	51.9078	0.4
-173.226	51.9038	0.4
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-173.196	51.925	0.4
-173.18	51.95	0.4
-173.176	51.9563	0.4
-173.151	51.9737	0.4
-173.147	51.975	0.4
-173.126	51.9828	0.4
-173.101	51.9863	0.4
-173.076	51.9854	0.4
-173.051	51.9799	0.4
-173.039	51.975	0.4
-173.026	51.9697	0.4
-173.001	51.9526	0.4
-172.998	51.95	0.4
-172.976	51.925	0.4
-172.976	51.9249	0.4
-172.952	51.9	0.4
-172.951	51.8993	0.4
-172.926	51.8813	0.4
-172.908	51.875	0.4
-172.901	51.8708	0.4
-172.876	51.8562	0.4
-172.867	51.85	0.4
-172.851	51.834	0.4
-172.843	51.825	0.4
-172.827	51.8	0.4
-172.826	51.7987	0.4
-172.815	51.775	0.4
-172.807	51.75	0.4
-172.803	51.725	0.4
-172.802	51.7	0.4
-172.803	51.675	0.4
-172.806	51.65	0.4
-172.812	51.625	0.4
-172.819	51.6	0.4
-172.826	51.5828	0.4
-172.829	51.575	0.4
-172.841	51.55	0.4
-172.851	51.5327	0.4
-172.855	51.525	0.4
-172.875	51.5	0.4
-172.876	51.4986	0.4
-172.899	51.475	0.4
-172.901	51.4737	0.4
-172.926	51.4544	0.4
-172.932	51.45	0.4
-172.951	51.4383	0.4
-172.975	51.425	0.4
> 0.8 contour
-173.176	51.852	0.8
-173.151	51.86	0.8
-173.126	51.8642	0.8
-173.101	51.8641	0.8
-173.076	51.8595	0.8
-173.051	51.85	0.8
-173.051	51.8499	0.8
-173.026	51.8356	0.8
-173.012	51.825	0.8
-173.001	51.8147	0.8
-172.987	51.8	0.8
-172.976	51.7839	0.8
-172.97	51.775	0.8
-172.959	51.75	0.8
-172.953	51.725	0.8
-172.952	51.7	0.8
-172.955	51.675	0.8
-172.963	51.65	0.8
-172.973	51.625	0.8
-172.976	51.6174	0.8
-172.984	51.6	0.8
-173.001	51.5751	0.8
-173.001	51.575	0.8
-173.026	51.5515	0.8
-173.028	51.55	0.8
-173.051	51.5357	0.8
-173.076	51.526	0.8
-173.08	51.525	0.8
-173.101	51.5202	0.8
-173.126	51.5183	0.8
-173.151	51.5203	0.8
-173.171	51.525	0.8
-173.176	51.5261	0.8
-173.201	51.5356	0.8
-173.225	51.55	0.8
-173.226	51.5504	0.8
-173.251	51.5712	0.8
-173.255	51.575	0.8
-173.275	51.6	0.8
-173.276	51.6015	0.8
-173.29	51.625	0.8
-173.299	51.65	0.8
-173.301	51.6575	0.8
-173.305	51.675	0.8
-173.306	51.7	0.8
-173.303	51.725	0.8
-173.301	51.7313	0.8
-173.296	51.75	0.8
-173.283	51.775	0.8
-173.276	51.7838	0.8
-173.263	51.8	0.8
-173.251	51.8103	0.8
-173.231	51.825	0.8
-173.226	51.8281	0.8
-173.201	51.8415	0.8
-173.181	51.85	0.8
-173.176	51.852	0.8
> 1.2 contour
-173.126	51.8022	1.2
-173.108	51.8	1.2
-173.101	51.7992	1.2
-173.076	51.7897	1.2
-173.056	51.775	1.2
-173.051	51.7704	1.2
-173.035	51.75	1.2
-173.026	51.7295	1.2
-173.024	51.725	1.2
-173.02	51.7	1.2
-173.023	51.675	1.2
-173.026	51.6687	1.2
-173.033	51.65	1.2
-173.051	51.6256	1.2
-173.052	51.625	1.2
-173.076	51.6055	1.2
-173.089	51.6	1.2
-173.101	51.5951	1.2
-173.126	51.5916	1.2
-173.151	51.5954	1.2
-173.161	51.6	1.2
-173.176	51.6064	1.2
-173.198	51.625	1.2
-173.201	51.6286	1.2
-173.217	51.65	1.2
-173.226	51.6697	1.2
-173.228	51.675	1.2
-173.232	51.7	1.2
-173.228	51.725	1.2
-173.226	51.7296	1.2
-173.217	51.75	1.2
-173.201	51.769	1.2
-173.194	51.775	1.2
-173.176	51.7882	1.2
-173.151	51.7984	1.2
-173.139	51.8	1.2
-173.126	51.8022	1.2
> 1.6 contour
-173.151	51.7577	1.6
-173.126	51.7648	1.6
-173.101	51.758	1.6
-173.089	51.75	1.6
-173.076	51.7371	1.6
-173.067	51.725	1.6
-173.06	51.7	1.6
-173.067	51.675	1.6
-173.076	51.6614	1.6
-173.087	51.65	1.6
-173.101	51.6401	1.6
-173.126	51.6333	1.6
-173.151	51.6403	1.6
-173.164	51.65	1.6
-173.176	51.662	1.6
-173.185	51.675	1.6
-173.192	51.7	1.6
-173.184	51.725	1.6
-173.176	51.7367	1.6
-173.162	51.75	1.6
-173.151	51.7577	1.6
> 2 contour
-173.151	51.7274	2
-173.126	51.7411	2
-173.101	51.7275	2
-173.098	51.725	2
-173.084	51.7	2
-173.098	51.675	2
-173.101	51.6718	2
-173.126	51.6583	2
-173.151	51.6719	2
-173.154	51.675	2
-173.167	51.7	2
-173.153	51.725	2
-173.151	51.7274	2