| Class | Qualifier | Standard Units | Notes |
|
| gloc | barometric | m | A synonym for pressure altitude. Which Standard Atmosphere? |
| gloc | geodetic | m | Surveyed or modeled using a (non-GPS) geodetic Earth model. Which
model? |
| gloc | geometric | m | Geometrically measured height above MSL (lidar, radar, yardstick,
...). |
| gloc | geopotential | m | Geopotential meters, from hydrostatic integration. |
| gloc | GPS | m | Global Positioning System (GPS) uses the WGS-84 Earth model. |
| gloc | geodetic | deg | Surveyed or modeled using a (non-GPS) geodetic Earth model. Which
model? |
| gloc | GPS | deg | Global Positioning System (GPS) uses the WGS-84 Earth model. |
| gloc | INS | deg | Inertial Navigation System (INS). |
| gloc | spherical | deg | Spherical Earth model. Radius? |
| gloc | seconds | s | Seconds since 00:00 UTC on day given by DATE (line 7). |
| gloc | hours | h | Hours since 00:00 UTC on day given by DATE (line 7). |
| gloc | days | d | Days since 00:00 UTC on day given by DATE (line 7). |
| gloc | days since year0 | d | Days since 00:00 UTC on January 1 of year given in DATE (line 7). |