{
  "aqi": {
    "chn": 78.0,
    "usa": 95.0
  },
  "description": {
    "chn": "Good",
    "usa": "Moderate"
  },
  "pm25": 32.0,
  "pm10": 48.0,
  "o3": 96.0,
  "so2": 4.0,
  "no2": 21.0,
  "co": 0.6
}