> 4 contour
20.223	41.9717	4
20.273	41.9682	4
20.323	41.9717	4
20.3502	41.963	4
20.373	41.957	4
20.423	41.9474	4
20.473	41.9187	4
20.4832	41.913	4
20.523	41.8898	4
20.5515	41.863	4
20.573	41.8347	4
20.5898	41.813	4
20.6114	41.763	4
20.619	41.713	4
20.6148	41.663	4
20.5959	41.613	4
20.573	41.5806	4
20.5612	41.563	4
20.523	41.5243	4
20.5064	41.513	4
20.473	41.4934	4
20.423	41.4674	4
20.3989	41.463	4
20.373	41.4572	4
20.323	41.4414	4
20.273	41.4449	4
20.223	41.4414	4
20.173	41.4572	4
20.1473	41.463	4
20.123	41.4675	4
20.073	41.4941	4
20.0409	41.513	4
20.023	41.5248	4
19.9849	41.563	4
19.973	41.5806	4
19.9501	41.613	4
19.923	41.6244	4
19.892	41.663	4
19.923	41.7107	4
19.9265	41.713	4
19.9345	41.763	4
19.9562	41.813	4
19.973	41.8347	4
19.9945	41.863	4
20.023	41.8898	4
20.0628	41.913	4
20.073	41.9187	4
20.123	41.9473	4
20.173	41.957	4
20.1958	41.963	4
20.223	41.9717	4
> 8 contour
20.173	41.8709	8
20.1983	41.863	8
20.223	41.8544	8
20.273	41.854	8
20.323	41.8544	8
20.3477	41.863	8
20.373	41.8709	8
20.3837	41.863	8
20.4034	41.813	8
20.423	41.7985	8
20.4511	41.763	8
20.4641	41.713	8
20.4574	41.663	8
20.423	41.6147	8
20.4212	41.613	8
20.373	41.5827	8
20.3251	41.563	8
20.323	41.5619	8
20.3082	41.563	8
20.273	41.5642	8
20.2378	41.563	8
20.223	41.5619	8
20.2209	41.563	8
20.173	41.5827	8
20.1248	41.613	8
20.123	41.6147	8
20.0886	41.663	8
20.0806	41.713	8
20.0948	41.763	8
20.123	41.7985	8
20.1426	41.813	8
20.1623	41.863	8
20.173	41.8709	8
> 12 contour
20.173	41.7696	12
20.223	41.801	12
20.273	41.8075	12
20.323	41.801	12
20.373	41.7696	12
20.3807	41.763	12
20.4039	41.713	12
20.3929	41.663	12
20.373	41.6434	12
20.3238	41.613	12
20.323	41.6125	12
20.273	41.6035	12
20.223	41.6125	12
20.2222	41.613	12
20.173	41.6434	12
20.1531	41.663	12
20.1419	41.713	12
20.1653	41.763	12
20.173	41.7696	12
> 16 contour
20.273	41.7857	16
20.322	41.763	16
20.323	41.7619	16
20.3593	41.713	16
20.34	41.663	16
20.323	41.6506	16
20.273	41.6282	16
20.223	41.6506	16
20.206	41.663	16
20.1866	41.713	16
20.223	41.7619	16
20.224	41.763	16
20.273	41.7857	16
> 20 contour
20.273	41.7639	20
20.2748	41.763	20
20.3222	41.713	20
20.299	41.663	20
20.273	41.6483	20
20.247	41.663	20
20.2238	41.713	20
20.2712	41.763	20
20.273	41.7639	20