{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Qualitat de l'aire (PM10)",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "0-20 µg/m³",
     "url": "3525e83a0f0a019c66fb33c753d95c0e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAaklEQVQ4jWNhoDJgobWBkmSa8xybgZLBBWkzNc2M1Egx6fqpc7fWTpiVDjMUxYUgw5wiA9TJdCV9wpBiwEK5Eahg1EDKAQsVzEABI93A66fO3SLVgOtoepANfA4tNcgBWIsvFAlyAdXDEAApTRefJqxBnQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      20
     ]
    },
    {
     "label": "21-40 µg/m³",
     "url": "061b7722f2f8bf75a9b99ccfaf53464f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAbklEQVQ4jWNhoDJgobWBkmSa8xybgZLh8a4ztXWV1Ugx6erlu7dWLtydDjMUxYUgw1y9zdRJd+Bu+oUhxYCFciNQwaiBlAMWKpiBAka6gVcv371FqgFX0fQgG/gcUmogMjoJAGvxhSJBLqB6GAIAcLgZNFNzwAgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      40
     ]
    },
    {
     "label": "41-50 µg/m³",
     "url": "07305d8870496fa9eda3f259aaf4c043",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAcElEQVQ4jWNhoDJgobWBkmSa8xybgZLZ2aYzzcyk1Ugx6dSpp7emTj2dDjMUxYUgw0JCtNRJdd7UqafpF4YUAxbKjUAFowZSDlioYAYKGOkGnjr19BapBpxC04Ns4HNQqYGc0UkAWIsvFAlyAdXDEAC6nRuYovwAtwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      50
     ]
    },
    {
     "label": "51-100 µg/m³",
     "url": "fbd0dd3aef6b40417f005af403e9943e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAcElEQVQ4jWNhoDJgobWBkmSa8xybgZLZbqYzzVSk1Ugx6dSdp7em7jqdDjMUxYUgw0IstNRJdd7UXafpF4YUAxbKjUAFowZSDlioYAYKGOkGnrrz9BapBpxC04Ns4HNQqYGc0UkAWIsvFAlyAdXDEADj+Rv9fbIJQAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      100
     ]
    },
    {
     "label": "101-150 µg/m³",
     "url": "d75e147e398a702443ddf3a89f193aad",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAb0lEQVQ4jWNhoDJgobWBkmSa8xybgZJROjozdcXF1Ugx6fLLl7eWXbmSDjMUxYUgw9yUldVJdt+VK/QLQ4oBC+VGoIJRAykHLFQwAwWMdAMvv3x5i1QDLqPpQTbwObjUQMroJACsxReKBLmA6mEIAGCEGz3JCAQaAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      150
     ]
    },
    {
     "label": ">150 µg/m³",
     "url": "36c02723a263576e862f44b6df69b391",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAbklEQVQ4jWNhoDJgobWBkmSa8xybgZJeOlEzVcV11Ugx6fbLy7e2XVmWDjMUxYUgw6yV3dRJdt8VOoYhxYCFciNQwaiBlAMWKpiBAka6gbdfXr5FqgG30fQgG/gcXGogZXQSANbiC0WCXED1MAQAPbgZgcsMvDYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      1200
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "PM10"
    }
   ]
  }
 ]
}