Until 5227.963 generations ago, the F deme's population was fixed at 7772. From 5227.963 to 4419.4, it underwent a exponential reduction to 6787 individuals. Then, a exponential reduction brought the count to 6643 by 2627.0. Since then, from 2627.0 generations to the current day, the population has reduced from 6643 to 5474 at a linear rate.
time_units: generations
demes:
  - name: F
    start_time: .inf
    epochs:
      - start_size: 7772
        end_time: 5227.963
      - start_size: 7772
        end_size: 6787
        end_time: 4419.4
        size_function: exponential
      - start_size: 6787
        end_time: 2627.0
        end_size: 6643
        size_function: exponential
      - end_time: 0
        start_size: 6643
        end_size: 5474
        size_function: linear