Mean cumulative rainfall and its seasonal distribution statistics.

Average rainfall in all of the 22 day periods and its distribution metrics in grasslands and sown pastures sites, during the rainy season 2007, dry season 2007/2008 and the initial trimester of the rainy season 2008, the period of measurement of above-ground net primary productivity and three rainfall distribution metrics: mean number of rainfall events, mean size of rainfall events (mm) and mean interval between rainfall events (days).n = the number of sampled rain gauges contributing to the mean.S.D. = standard deviation.