{
  "_id": "020013",
  "classname": "Observed phenomena",
  "classno": "20",
  "datawidthbits": "11",
  "name": "Height of base of cloud",
  "note": "(see Note 6)",
  "refvalue": "-40",
  "scale": "-1",
  "status": "Operational",
  "unit": "m"
}