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Figure 3.9 also shows mean rainfall during four individual months based on CHIRPS2: January, April, July, and October. The gauge analysis indicates similar results and hence is not shown. The seasonal shift in the tropical rainbelt over the region is clearly evident. In January peak rainfall is south of the equator, with monthly rainfall on the order of 100 to 200 mm. It exceeds 150 mm over most of that area. North of the equator monthly rainfall progressively decreases from 100 mm near the equator to less than 10 mm at around 6°N. In April the rainbelt is displaced northward. Mean rainfall is on the order of 100 to 200 mm throughout the latitude span of 10°S to 7°N, with rainfall decreasing rapidly further north. Further displacement is evident in July, with high rainfall north of the equator and a rapid decrease southward from the equator. July rainfall decreases from roughly 50 mm near the equator to less than 10 mm in the southernmost regions. In October the rain belt retreats southward and high rainfall extends throughout the basin. The rainbelt is most extensive and strongest during this month. Vast areas receive 200 to 300 mm of rainfall.