The nadir in the animals well-being occurred, on average, at 28.3 and 27.2 years old for the chimpanzees, and 35.4 years old for the orangutans.

The animals well-being was at its lowest, on average, at 28.3 and 27.2 years old for the chimpanzees, and 35.4 years old for the orangutans.
