Up to 9836.4 generations ago, the population of the U deme was steady at 9309. It then entered a phase of exponential change until 5369.785 generations and size 3122. Following this, there was a exponential reduction to 1493 individuals, lasting until 4698.44. Since 4698.44 generations ago, the population has changed from 1493 to 1797 at a linear pace.
time_units: generations
demes:
  - name: U
    start_time: .inf
    epochs:
      - start_size: 9309
        end_time: 9836.4
      - start_size: 9309
        end_size: 3122
        end_time: 5369.785
        size_function: exponential
      - start_size: 3122
        end_time: 4698.44
        end_size: 1493
        size_function: exponential
      - end_time: 0
        start_size: 1493
        end_size: 1797
        size_function: linear