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   "maxScale": 0,
   "legend": [
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    {
     "label": "15,001 to 45,000",
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     "label": "7,501 to 15,000",
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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "Unpopulated",
     "url": "13b017472f42510c823cf868a0bfbd83",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAP0lEQVQ4jWPZtGnTfwYqAhYQISUlRRXDnj17BjGQmoBl1ECKAQvlRqCCUQMpByxUMAMFjBo4YsLw2bNnVDMRAIooCRgpTSCwAAAAAElFTkSuQmCC",
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   "legendGroups": [
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