{
  "agency": "The name of agency that shared the OPUS solution with NGS",
  "condition": "Condition of mark",
  "datum": "Datum for orthometric height",
  "designation": "A human-friendly mark identifier associated with a mark, may not be unique",
  "ellHt": "Height, in meters, above the geometric reference frame ellipsoid",
  "ellHtP2p": "'peak-to-peak', in meters, the range of ellipsoid height values determined in solutions from 3 different CORS",
  "epoch": "The date, in decimal years, CE, for the coordinates; important if the mark is moving within the reference frame",
  "lat": "Latitude, in decimal degrees, positive north of the equator",
  "latDms": "Latitude in Degrees-Minutes-Seconds with a 'N'orth or 'S'outh hemisphere prefix",
  "latP2p": "'peak-to-peak', in meters, the range of latitude values determined in solutions from 3 different CORS",
  "lon": "Longitude in decimal degrees; negative west of the prime meridian",
  "lonDms": "Longitude in Degrees-Minutes-Seconds with an 'E'ast or 'W'est hemisphere prefix",
  "lonP2p": "'peak-to-peak', in meters, the range of longitude values determined in solutions from 3 different CORS",
  "monumentType": "Type of monumentation",
  "observed": "Observation start time (GPS epoch)",
  "orthoHt": "Height, in meters, above the orthometric datum ",
  "orthoHtP2p": "'peak-to-peak', in meters, the range of ellipsoid height values padded with a geoid error estimate",
  "pid": "A 6-character permanent identifier that uniquely identifies a mark",
  "refFrame": "Datum for latitude, longitude, and ellipsoid height",
  "setting": "The mark's underlying structure, e.g., a concrete post or deep-driven rod",
  "stCounty": "State abbreviation and County name where a mark is located",
  "stability": "An estimate of the mark's ability to maintain a long-term, constant position relative to other local features",
  "stamping": "A transcription of the name and/or other characters, if any, struck into the mark's tablet",
  "ts": "Timestamp, the database ID for this instance of this observation; a combination of pid and ts may be used to retrieve a datasheet for this observation"
}