ContourPolylines

Polyline 1
==========
-8092,31363,2250
-4564,32719
-2755,34436
-584,37238
501,40854

Polyline 2
==========
-7188,25307,2000
-946,26573
4662,29555
8733,35159
10361,43294

Polyline 3
==========
-5831,17173,1750
1044,19161
9999,24313
17688,29375
20673,35340

Polyline 4
==========
-4383,8767,1500
5205,10484
13437,13467
20673,17805
22482,20607

Polyline 5
==========
1768,-1718,1250
11085,361
15517,3524
20854,9490
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