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T-test of differences in annual rainfall in the study locations (1986–2016).
| Location | t | df | Mean Difference | 95% Confidence Interval of the Difference |
|
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Ogbaru Rainfall | -0.498* | 30 | -3.129 | -15.96 | 9.71 |
| Anambra East rainfall | 0.020* | 30 | 0.839 | -82.80 | 84.48 |
| Ayamelum Rainfall | 0.013* | 30 | 0.674 | -109.01 | 110.35 |
*not significant P ≥ 0.05. Source: (Field survey, 2018).
