> 2 contour
69.936	30.1027	2
69.9371	30.101	2
69.9726	30.051	2
69.986	30.0334	2
70.036	30.0257	2
70.0793	30.001	2
70.086	29.997	2
70.136	29.9608	2
70.145	29.951	2
70.177	29.901	2
70.186	29.8744	2
70.2052	29.901	2
70.236	29.9113	2
70.2447	29.901	2
70.2516	29.851	2
70.236	29.8258	2
70.2241	29.801	2
70.236	29.7759	2
70.2698	29.751	2
70.2545	29.701	2
70.236	29.6671	2
70.2264	29.651	2
70.186	29.6051	2
70.1823	29.601	2
70.136	29.562	2
70.1111	29.551	2
70.086	29.539	2
70.0748	29.551	2
70.036	29.5808	2
69.986	29.5725	2
69.936	29.562	2
69.886	29.572	2
69.836	29.5802	2
69.7997	29.601	2
69.786	29.6096	2
69.736	29.6474	2
69.7326	29.651	2
69.686	29.6694	2
69.6575	29.701	2
69.636	29.7312	2
69.6206	29.751	2
69.636	29.7761	2
69.669	29.801	2
69.6751	29.851	2
69.6569	29.901	2
69.686	29.9339	2
69.7271	29.951	2
69.7165	30.001	2
69.736	30.0196	2
69.7809	30.001	2
69.786	29.9971	2
69.7923	30.001	2
69.786	30.0131	2
69.7773	30.051	2
69.786	30.0675	2
69.8019	30.051	2
69.836	30.0263	2
69.886	30.0339	2
69.8994	30.051	2
69.9349	30.101	2
69.936	30.1027	2
> 4 contour
69.886	29.938	4
69.936	29.9398	4
69.986	29.9237	4
70.0292	29.901	4
70.036	29.8969	4
70.0707	29.851	4
70.0799	29.801	4
70.0689	29.751	4
70.036	29.7092	4
70.0208	29.701	4
69.986	29.6837	4
69.936	29.6655	4
69.886	29.6817	4
69.8474	29.701	4
69.836	29.7075	4
69.8024	29.751	4
69.7892	29.801	4
69.8008	29.851	4
69.836	29.8975	4
69.838	29.901	4
69.886	29.938	4
> 6 contour
69.886	29.9043	6
69.8993	29.901	6
69.936	29.8935	6
69.986	29.8762	6
70.0171	29.851	6
70.0358	29.801	6
70.013	29.751	6
69.986	29.7301	6
69.936	29.7106	6
69.886	29.7152	6
69.8457	29.751	6
69.836	29.7663	6
69.8128	29.801	6
69.836	29.8369	6
69.8531	29.851	6
69.8818	29.901	6
69.886	29.9043	6
> 8 contour
69.936	29.8655	8
69.9666	29.851	8
69.986	29.8371	8
70.0088	29.801	8
69.986	29.7685	8
69.9602	29.751	8
69.936	29.7389	8
69.886	29.7351	8
69.8681	29.751	8
69.8371	29.801	8
69.886	29.8392	8
69.9028	29.851	8
69.936	29.8655	8