Geoscience Reference
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actual changes in rainfall in the last century over the entire Nigeria is shown
in Fig. 12.11 and the area with significant change in annual rainfall values at
5% significance level is shown in Fig. 12.12. About 2.5% of the total area
experienced overall rainfall change in the order of between -350 and -250
Fig. 12.11. Change in annual rainfall of Nigeria between 1901 and 2000.
Fig. 12.12. Significant changes in annual rainfall at 5% significance level.
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