> 10 contour
72.9577	34.9376	10
73.0411	34.9249	10
73.075	34.9039	10
73.1244	34.8637	10
73.1362	34.8539	10
73.1244	34.8455	10
73.0545	34.8039	10
73.0411	34.7852	10
72.9896	34.8039	10
72.9577	34.8256	10
72.947	34.8539	10
72.9238	34.9039	10
72.9577	34.9376	10