Until 6122.202 generations ago, the J deme's population was fixed at 6956. From 6122.202 to 5324.4259, it underwent a exponential change to 3535 individuals. Then, a linear change brought the count to 182 by 3585.0. Since then, from 3585.0 generations to the current day, the population has increased from 182 to 5542 at a linear rate.
time_units: generations
demes:
  - name: J
    start_time: .inf
    epochs:
      - start_size: 6956
        end_time: 6122.202
      - start_size: 6956
        end_size: 3535
        end_time: 5324.4259
        size_function: exponential
      - start_size: 3535
        end_time: 3585.0
        end_size: 182
        size_function: linear
      - end_time: 0
        start_size: 182
        end_size: 5542
        size_function: linear