{
  "_id": "015028",
  "classname": "Physical/chemical constituents",
  "classno": "15",
  "datawidthbits": "16",
  "name": "Mole fraction of atmospheric constituent/pollutant in dry air",
  "refvalue": "0",
  "scale": "5",
  "status": "Operational",
  "unit": "\u2030"
}