How much precipitation falls in the equatorial belt in South America?

The South American equatorial belt extends over the territory of several countries: Colombia, Brazil, Peru. In general, this zone is humid all year round, and unlike tropical forests, it rains here constantly, and not in semi-annual seasons. On average, about three thousand mm of precipitation falls per year. And in the mountainous regions of Colombia and Peru, due to the relief, it rains many times more. On the eastern part of the Andes, up to 5-6000 mm, and on the western slope (Pacific coast of Colombia) up to ten thousand millimeters (the wettest strip).