{
  "_id": "015090",
  "classname": "Physical/chemical constituents",
  "classno": "15",
  "datawidthbits": "20",
  "name": "Path delay due to neutral hydrostatic atmosphere (see Note 14)",
  "note": "(14) 015090 is the zenith path delay due to the neutral hydrostatic atmosphere mapped onto the signal path.",
  "refvalue": "0",
  "scale": "4",
  "status": "Operational",
  "unit": "m"
}