Analysis of Climate Variability and Trends for Climate-Resilient Maize Farming System in Major Agroecology Zones of Ethiopia

Table 2

Precipitation concentration index of 10 point data at each agroecology zones and number of years (1987–2018) [25].

Agroecology zones	PCI range	Class of PCI
		PCI average value	Uniform (<10%)	Irregular (11–15%)	Strong (16–20%)	Significantly irregular (PCI ≥ 20)
LPZ	15.24−9.20	22.22	0	6	13	13
MPZ	13.1–19.03	16.06	0	8	13	11
HPZ	11.8–27.33	19.56	0	8	14	10

LPZ = low productive agroecology zone, HPZ = high productive agroecology zone, MPZ = medium productive agroecology zone, PCI = precipitation concentration index; source: own study.