Principal facts (gravity observations)
| Label |
Definition |
| (stname) |
station identifier (text, 4 characters) |
| auxname |
(text, 4 characters) |
| latdeg |
degrees of latitude (integer) |
| latmin |
minutes of latitude (number, 2 places to right of decimal) |
| londeg |
degrees of longitude (integer) |
| lonmin |
minutes of longitude (number, 2 places to right of decimal) |
| elevft |
Elevation in feet |
| obsgrav |
Observed gravity |
| locsrc |
Location source code |
| gravsrc |
Gravity source code |
| elevsrc |
Elevation source code |
| sbaacc |
simple bouguer anomaly accuracy code |
| faa |
free-air anomaly (mgal) |
| sba |
simple bouguer anomaly (mgal) |
| iztc |
inner-zone terrain correction from station to 0.39 km to 0.01 milligal |
| tc |
terrain correction from 0.39 km to 166.7 km to 0.01 milligal |
| cba |
complete bouguer anomaly |
| ia |
isostatic anomaly |
| dataset |
text of 4 characters matching a value from the dataset table (table 2) |
| datum |
Datum code |
| elev2ft |
second elevation in whole feet |
| elev2src |
Second elevation source code (same meanings as for elevation source code) |
| sba2elev |
simple Bouguer anomaly based on second elevation to 0.1 milligal |
| iacode |
isostatic anomaly code |
