3 of 3 codes

Coordinate datum code — 3 of 3 codes, each with its meaning, normalised form and the years it is valid for
Code Means Normalised Valid
1 NAD27 North American Datum 1927 (EPSG:4267). NAD27 always
2 NAD83 North American Datum 1983 (EPSG:4269). NAD83 always
3 WGS84 World Geodetic System 1984 (EPSG:4326). WGS84 always

Columns that use these codes

Columns that read Coordinate datum code, and the dataset each belongs to
Dataset Column Meaning
Drilling Permits Pending Approval (with latitudes and longitudes) latlong_type_code The DATUM the applicant's coordinates were surveyed on — 1 NAD27, 2 NAD83, 3 WGS84 — not the form they are written in. NAD27 on 174 of the 258 rows held, so treating the column as WGS84 is worth about 200 metres in West Texas.

Where this mapping came from: OilGasDataProcessing process_completions.packetData, inline lat_lon_code map (CMPL packet field 44)