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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABUAAAAVCAYAAACpF6WWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAnUlEQVQ4je2VSw6AIAwFadKdN+YA3Nh1DSaQ8oSCgDvfzrSOwyeVnR0xatQq8AQMe2gEKvrh9P7RcISA/WRBxYJhTcELMCPQgnXgGcxouBiJ4GL5byzxPb3PvNEyRXjVsmbL7oPwD70TN3nlsPBK0eZrRcVBzdrCgHEJusuWNDSD01dHjMGwOqWcNrbguNzePC3ADYAJbEF149Q/6gJi7jtroMMoGAAAAABJRU5ErkJggg==",
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     "groupId": "0",
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     "width": 21,
     "values": [
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    },
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     "label": "> 100 - 250",
     "url": "86bed1523f6b97cf8021d53a43a67ed6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABUAAAAVCAYAAACpF6WWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAmUlEQVQ4je2V3Q6AIAhGYeMZe8hekmabDj4TTe0u7hp4OP6MhOLQIMethEzAsIZHoOo+zrqAj6qeI6hGMMwZuAMLAiNYB17AgoaLoQnstv/GEtfZc5aNlqWH2G5LJGMr9EHID70jHfLKZeGT4s3Pit1FzdrCgKEM3WXLFlrAueuIMRg+TimyxhEct9ubpw7cAITAFtQWTv2jLsRlLasXV6+eAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 21,
     "width": 21,
     "values": [
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    },
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     "label": ">   20 - 100",
     "url": "b9c7bc92bdfc8b543bc9811f269552ac",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABUAAAAVCAYAAACpF6WWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAl0lEQVQ4je3VSwrAIAwE0ATm/ldOsaAkQ41W7a7ZFfU5frCQvCxp014DFjDuozOohY8HXiNTemiGWoZxm8MDDAYzbIA3GJxws6zAYflvUvI4v884mLLNAT/bluTSQj4o/OhdZZN3DouvlB6+VhoOajUtPTBS0VNp1aMNrrPOJKaEj6+U+MQZzssdvacB7gAp2EN9x6V/1AV/Ri1W+p4YUwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 21,
     "width": 21,
     "values": [
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     ]
    },
    {
     "label": ">   10 -   20",
     "url": "c678f9b77784cdc59637bcdf7a590836",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABUAAAAVCAYAAACpF6WWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAnUlEQVQ4je2V2w2AIAxFadIpnNCRnNA1ajDBtBcoCPjn/TOtx8MjlYMfcWpUK/AADHuoByr64Tjzhn3L+smDigfDmoIbMCPQgzXgD5jRcDISwWb5byzxPb3PvNAyRXjWsmTL4YPwD70TN3nmsPBK0eJrReagRm1hwIQEXWVLGvqA01d7jMGwOKWCNvbguNzWPDXgCsAF1qC6cegfdQFgRC3WOh5gJQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 21,
     "width": 21,
     "values": [
      500
     ]
    },
    {
     "label": "<   10",
     "url": "ada172111377888bfe9e7b3ed5421ee7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABUAAAAVCAYAAACpF6WWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAnUlEQVQ4je2V2w2AIAxFadLx3MY53Mb9ajDBtBcoCPjn/TOtx8MjlYMfcWpUK/AADHuoByr6YdvzhvPI+smDigfDmoIbMCPQgzXgD5jRcDISwWb5byzxPb3PvNAyRXjWsmTL4YPwD70TN3nmsPBK0eJrReagRm1hwIQEXWVLGvqA01d7jMGwOKWCNvbguNzWPDXgCsAF1qC6cegfdQG/qS6VLXVCyAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 21,
     "width": 21,
     "values": [
      10000
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Blei - 2007 Hintergrund: Jahresmittelwert (ng/m³)"
    }
   ]
  }
 ]
}