The graphs presents the rainfall in 1980 and 2000 in grasslands with hot desert climate.
Overall, 1980 had a significant higher rate of precipitation than 2000. Besides, the wettest months in 1980 where the driest 20 years later, and the opposite.
The precipitation in January 1980 was just above 250 mm, which slightly declined in February. After the month of March, where the rainfall was around 325mm, the rates halved steadily untill July to just over 150mm. The folowing months, untill November, rates went up again to what the year started with in January and this amount of precipitation stayed the same in December.
In January 2000, there only fell one fifth of what fell in the same month of 1980. This even became less in the next three months, with 48mm for February, and both 47mm for March and April. Unlike 1980, rainfall increased in the folowing months, to 51mm in May and June, and 2 milimeters more in the two following months after. September had a drop to 49 mm, whereafter it steadily grew to August rates untill November. The year 2000 ended with the same amount of rainfall of September, with only 49mm of rain.