> 5 contour
20.912	37.9181	5
20.962	37.9158	5
21.012	37.9181	5
21.0493	37.906	5
21.062	37.9026	5
21.0938	37.856	5
21.112	37.8445	5
21.162	37.8306	5
21.212	37.8302	5
21.2362	37.806	5
21.262	37.771	5
21.2733	37.756	5
21.2962	37.706	5
21.3048	37.656	5
21.3025	37.606	5
21.2892	37.556	5
21.262	37.5099	5
21.2599	37.506	5
21.2178	37.456	5
21.212	37.4507	5
21.162	37.4181	5
21.1412	37.406	5
21.112	37.3891	5
21.062	37.3769	5
21.012	37.363	5
20.962	37.3651	5
20.912	37.363	5
20.862	37.3769	5
20.812	37.3891	5
20.7828	37.406	5
20.762	37.4181	5
20.712	37.4507	5
20.7062	37.456	5
20.6641	37.506	5
20.662	37.5099	5
20.6348	37.556	5
20.6215	37.606	5
20.6192	37.656	5
20.6278	37.706	5
20.6507	37.756	5
20.662	37.7609	5
20.6786	37.756	5
20.712	37.7485	5
20.7305	37.756	5
20.762	37.7856	5
20.7695	37.806	5
20.762	37.8458	5
20.7589	37.856	5
20.762	37.8621	5
20.812	37.8918	5
20.862	37.9026	5
20.8747	37.906	5
20.912	37.9181	5
> 10 contour
20.862	37.7646	10
20.9034	37.756	10
20.912	37.755	10
20.9144	37.756	10
20.962	37.7941	10
21.012	37.7941	10
21.062	37.7703	10
21.0869	37.756	10
21.112	37.7373	10
21.1372	37.706	10
21.1535	37.656	10
21.1486	37.606	10
21.1233	37.556	10
21.112	37.5434	10
21.062	37.511	10
21.052	37.506	10
21.012	37.4841	10
20.962	37.4833	10
20.912	37.4841	10
20.872	37.506	10
20.862	37.511	10
20.812	37.5434	10
20.8007	37.556	10
20.7754	37.606	10
20.812	37.6538	10
20.8127	37.656	10
20.8231	37.706	10
20.8513	37.756	10
20.862	37.7646	10
> 15 contour
20.912	37.7256	15
20.962	37.7465	15
21.012	37.7374	15
21.0601	37.706	15
21.062	37.7039	15
21.0926	37.656	15
21.0843	37.606	15
21.062	37.5795	15
21.0317	37.556	15
21.012	37.544	15
20.962	37.5336	15
20.912	37.544	15
20.8923	37.556	15
20.862	37.5795	15
20.8397	37.606	15
20.8435	37.656	15
20.862	37.7039	15
20.8639	37.706	15
20.912	37.7256	15
> 20 contour
20.962	37.7148	20
20.9848	37.706	20
21.012	37.6934	20
21.0478	37.656	20
21.0382	37.606	20
21.012	37.5828	20
20.962	37.5636	20
20.912	37.5828	20
20.8858	37.606	20
20.8762	37.656	20
20.912	37.6934	20
20.9392	37.706	20
20.962	37.7148	20