> 5 contour
11.708	51.5835	5
11.7913	51.6122	5
11.8747	51.6033	5
11.958	51.5823	5
12.0185	51.551	5
12.0413	51.5399	5
12.1244	51.4677	5
12.1109	51.3843	5
12.0413	51.3163	5
11.958	51.3093	5
11.9068	51.301	5
11.8747	51.288	5
11.7913	51.2961	5
11.708	51.2855	5
11.6912	51.301	5
11.6552	51.3843	5
11.63	51.4677	5
11.6736	51.551	5
11.708	51.5835	5
> 10 contour
11.708	51.4755	10
11.7913	51.539	10
11.8747	51.5454	10
11.958	51.4904	10
11.9918	51.4677	10
11.9863	51.3843	10
11.958	51.3675	10
11.8747	51.3333	10
11.7913	51.3554	10
11.7558	51.3843	10
11.708	51.4588	10
11.7021	51.4677	10
11.708	51.4755	10