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| Source | Df | SS | Var. comp. | % |
| Among Zones | 1 | 88.45 | 0.14 | 1.8% |
| Among Populations | 19 | 712.73 | 0.71 | 8.7% |
| Within Populations | 877 | 6390.52 | 7.29 | 89.5% |
| Total | 897 | 7191.70 | 8.14 | 100% |
Df: degree of freedom; SS: sum of squared deviations; Var. comp.: variance component estimates; %: percentage of total variation.
