Group search radius | Rainfall Stations | |||||
Darkar | Batel | Amedi | Akri | Duhok | Hosseinie | |
Group 1 (15 km) | 1 | 0 | 2 | 1 | 3 | 1 |
Group 2 (30 km) | 3 | 4 | 6 | 2 | 5 | 2 |
Group 3 (45 km) | 10 | 9 | 9 | 6 | 13 | 5 |
Group 4 (60 km) | 13 | 12 | 15 | 9 | 18 | 13 |
Group 5 (75 km) | 16 | 15 | 20 | 21 | 20 | 20 |
Group 6 (90 km) | 17 | 19 | 23 | 24 | 22 | 22 |
Group 7 (105 km) | 20 | 20 | 23 | 22 | 24 | |
Group 8 (120 km) | 22 | 22 | 24 | 24 | ||
Group 9 (135 km) | 22 | 22 | ||||
Group 10 (150 km) | 23 | 24 | ||||
Group 11 (165 km) | 24 | |||||
Number of groups | 11 | 10 | 8 | 6 | 8 | 7 |
Optimal number of stations | 1 | 4 | 15 | 24 | 3 | 2 |