The colour code represents the coverage rate by municipality and by grid. The coverage rate is defined as followed:
| | 0.1% – 30.0% |
| 30.1% – 50.0% | |
| 50.1% – 70.0% | |
| 70.1% – 80.0% | |
| 80.1% – 85.0% | |
| 85.1% – 90.0% | |
| 90.1% – 95.0% | |
| 95.1% – 100.0% |
It must be noted that the number of addresses present in a municipality or grid strongly impacts the coverage rate.