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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAR0lEQVQ4jWPZ//y/AgMDAwhTAzxgARn2j4HBgRqmMTEwHAAZSFXAMmogxYCFciNQwaiBlAMWKpiBAkYNHClh+ABU0lLJvAcAnckIuAmaPpQAAAAASUVORK5CYII=",
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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "20 - 40",
     "url": "57435442f4ae184227b3d6bd46227a55",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATElEQVQ4je3UsQ3AIBBD0V94EEbJWBmPTbhBkBIh0VCfO+4P8AoX1ju+NqFhSBDa2OMAJ3RhTgWmU544KzCfDMZRgVdsKIj1tBYM4gfP4gtjBJJzogAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "40 - 60",
     "url": "0b41a10ee8bc61dac35c9dc0eb4f62d6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARUlEQVQ4jWNhOP5fgYGBAYSpAR6wgA37x+BAFeOYGA6ADKQqYBk1kGLAQrkRqGDUQMoBCxXMQAGjBo6UMHwAKmmpZN4DABpPB9mDidw+AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      60
     ]
    },
    {
     "label": "60 - 80",
     "url": "239eb3701212e1640e133ecb16e644aa",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASElEQVQ4jWNhaF+uwPCHQYGBGoCF4QEL1DAHqhj4h+EACwOVAcuogRQDFsqNQAWjBlIOWKhgBgoYNXBkhCELwwNQSUsl0x4AAHyNCjtyL+exAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      80
     ]
    },
    {
     "label": "80 - 100",
     "url": "1e89bf0085b952c3a78e20d77ec5d6af",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASUlEQVQ4jWNhCKhQYPjzR4GBGoCF5QEL1DAHqhj4588BFgYqA5ZRAykGLJQbgQpGDaQcsFDBDBQwauDICEMWlgegkpY6prE8AAAUKA3RTqqJYgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      101
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "% irrigated"
    }
   ]
  }
 ]
}