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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATklEQVQ4jWNJrglt+c3yw4GBCoD1D8cBFpBhtzQ2W1PDQLUbvgwsDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhqx/OA6ASlpqAJBZANw+EFhg+r9hAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "+3"
     ]
    },
    {
     "label": "nicht ausgewertet",
     "url": "7dce2c206c6f70f2e1b8e44cc2d9b6cc",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAU0lEQVQ4je3UoREAQQhDUURKoRmaoT2aoZe9gZsVq4PkC+QTiMDdjwyGOmYmqkpBmSkR8YOFseCtwcmwIB144m1BPgwYTwvy9Q9rHNmu0WAt7VQfAtUQv+YMNBsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "x"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Die Abweichung der realisierten Wohn\nfläche (m2/ha) vom Mittelwert ist..."
    }
   ]
  }
 ]
}