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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABKElEQVQ4ja3UPyhFURzA8Q+e8mfHgEGhzEo2ISWLMthMit5kMbCTLCST0SYDk41iMRiNYpDiDYqQRdKtc+t2Pc+7rm/de0/nd/ue372/8zsF/0zhl3gtOtGGF9yGZ2ZhB5YwhZbE/AfOsI2DaoVz2ETDD+8Ph+sY03isJIyyWlUdIzjHYFKaFI5hRTa6sYfRtLAOG6jJKIwzncRhUjiEPn+nmBaO55DFCTXiPRZ2yUc92nEVC5vkpzm6xcLSPwhLSeEFZnLI7nCfFB6GbfNbb//EfjwoJFbYCeXPyhvW08KI5bBJezMKi3goJ3zGBI7QU4XoE4vYTU6m/9k1BrCG2dCS5bjEAk7SgXJFeMJ8OHWiHu1HK15xE77gNGT4jUpVjU7nrQrxsnwB8v4ysb6BZP8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "6 - 8"
     ]
    },
    {
     "label": "> 8 m",
     "url": "74d8f0e25af776506fbb0f706570c988",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "0",
     "height": 21,
     "width": 21,
     "values": [
      "> 8"
     ]
    },
    {
     "label": "Not available",
     "url": "51745a7987345f43918cf881c872de9b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABAUlEQVQ4jdXTsStFURgA8F96pKeUItn9BUxMimQ3GkyKyfL8FUgyUDYxWIhBEbPNX8BkkLwykZCnW2e43dxz79VL+ZbT+c45v/rO+U5Nm6P278EBTKI7zJ9xiZeqYB3zeMQpXkO+H7P4wgFaZcBeLGETb5m1JvYwhOWwp1UELmAD73ll4QGHmMN+DBzFdQGWRjvQk77TLDiCXeXjDFM4yQM/VIsm+v60D2sVz9eznZAF7jGM25LgDK5i4AUaWC2BJb9nEE8xMGnSIyxiJ4J1hcbeUuLO7sK4guMfyh/HGLZTX7LwERJ0DdOYwGfId+IG6znnxF41Kf88sl4Z/FW0HfwGcIMxCkxufjIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Not available"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "DepthCats"
    }
   ]
  }
 ]
}