Table 5.
Precipitation concentration index of 10 stations and number of years (1983–2016).
| Station | PCI range | Uniform precipitation (PCI<10) | Moderate precipitation (PCI 11–15) | Irregular precipitation (PCI 15–20) | Significantly irregular precipitation (PCI≥20) |
|---|---|---|---|---|---|
| Sekoru | 11.1–19.5 | 0 | 17 | 17 | 0 |
| Serbo | 10.7–15.3 | 0 | 32 | 2 | 0 |
| Bedele | 13.0–19.0 | 0 | 16 | 18 | 0 |
| Didesa Dildey | 14.0–22.5 | 0 | 3 | 29 | 2 |
| Arjo | 12.1–19.9 | 0 | 14 | 20 | 0 |
| Nekemte | 13.7–21.0 | 0 | 9 | 23 | 2 |
| Gimbi | 13.8–24.7 | 0 | 2 | 28 | 4 |
| Bako | 13.7–22.1 | 0 | 3 | 28 | 3 |
| Bako Tibe | 13.3–22.8 | 0 | 3 | 25 | 6 |
| Gedo | 13.5–23.3 | 0 | 5 | 24 | 5 |