| Known GDE - from regional studies |
| High potential GDE - from regional studies |
| Moderate potential GDE - from regional studies |
| Low potential GDE - from regional studies |
| Unclassified potential GDE - from regional studies |
| High potential GDE - from national assessment |
| Moderate potential GDE - from national assessment |
| Low potential GDE - from national assessment |
| Unclassified potential GDE - from national assessment |