Table 1
Used abbreviations.
| TMzn | Transverse Mercator (map projection) for a fixed zone |
| LAEA | Lambert Azimuthal Equal-Area (map projection) |
| LCC | Lambert Conformal Conic (map projection) |
| GRS80 | Geodetic Reference System (1980) |
| ETRS89 | European Terrestrial Reference System (1989) |
| PT-TM06 | ETRS89 datum for mainland Portugal based on TMzn (2006) |
| OAM Portugal | Official Administrative Map of mainland Portugal (2016) |
| OAM Algarve | Official Administrative Map of the Algarve (2016) |
| Geodetic Algarve | Geodetic network of the Algarve (2016) |
| NAM Algarve | New Administrative Map of the Algarve (2016) |
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