{
    "SO2": {
      "values": [
        { "date": "2020-07-31 15:00:00", "value": 4.35478 },
        { "date": "2020-07-31 14:00:00", "value": 4.25478 },
        { "date": "2020-07-31 13:00:00", "value": 4.34309 }
      ]
    },
    "C6H6": {
      "values": [
        { "date": "2020-07-31 15:00:00", "value": 0.23789 },
        { "date": "2020-07-31 14:00:00", "value": 0.22789 },
        { "date": "2020-07-31 13:00:00", "value": 0.21315 }
      ]
    },
    "CO": {
      "values": [
        { "date": "2020-07-31 15:00:00", "value": 251.874 },
        { "date": "2020-07-31 14:00:00", "value": 250.874 },
        { "date": "2020-07-31 13:00:00", "value": 251.097 }
      ]
    },
    "NO2": {
      "values": [
        { "date": "2020-07-31 15:00:00", "value": 7.13411 },
        { "date": "2020-07-31 14:00:00", "value": 7.33411 },
        { "date": "2020-07-31 13:00:00", "value": 9.32578 }
      ]
    },
    "O3": {
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        { "date": "2020-07-31 15:00:00", "value": 95.7768 },
        { "date": "2020-07-31 14:00:00", "value": 93.7768 },
        { "date": "2020-07-31 13:00:00", "value": 89.4232 }
      ]
    },
    "PM2.5": {
      "values": [
        { "date": "2020-07-31 15:00:00", "value": 4 },
        { "date": "2020-07-31 14:00:00", "value": 4 },
        { "date": "2020-07-31 13:00:00", "value": 5 }
      ]
    },
    "PM10": {
      "values": [
        { "date": "2020-07-31 15:00:00", "value": 16.8344 },
        { "date": "2020-07-31 14:00:00", "value": 17.8344 },
        { "date": "2020-07-31 13:00:00", "value": 20.8094 }
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  }